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EDUCATION:

Post Doctoral Research Fellow NIH Young Investigator Award, Protein biochemistry, University of Texas Health Science Center at Houston (1988-1992)
Ph.D. Rice Graduate Fellow Award, Molecular and cell biology, Department of Biochemistry and Cell Biology, Rice University (1984-1988)

B.S. Biology/Chemistry, Department of Natural and Applied Sciences, University of Houston at Clear Lake (1979-1984)
A.S. Biology/Chemistry, Department of Biology, San Jacinto College, Houston (1976-1978)


EXPERIENCE:

CURRENT
POSITION July 2004 to present
 

Senior Consultant - Biologics Consulting Group, Inc., Germantown, MD.

  • Review client internal policies and SOPs to assess suitability of their technical and quality practices for product development activities; prepare gap analysis reports for existing deficiencies relative to current FDA/ICH expectations.
  • Provide technical and quality assistance in identity, purity, potency, and stability test method development, validation, troubleshooting and OOS investigations for biopharmaceuticals.
  • Evaluate client CMC regulatory strategies for product development from pre-Phase I to BLA, with emphasis on drug substance and drug product characterization, comparability assessment, release and stability testing.
  • Prepare and review client IND and BLA submissions for suitability relative to current FDA expectations for CMC data from biotechnological/biological products.
  • Develop and deliver training sessions on technical, regulatory and quality elements of biological product development.
   
Feb. 2004 to July 2004  

Consultant (Affiliate) - Biologics Consulting Group, L.L.C., Germantown, MD.

   
2002 to 2004  

Contractor, American Red Cross Plasma Derivatives, Rockville, MD.

  • Served as principle CMC RA/QA associate for Plasma Derivative product development projects.
  • Established and implement R&D quality practice policies ("Good Development Practices" or "GDP") to support the development of plasma-derived products for FDA and international submissions.
  • Established and implement $250K NuGenesis SDMS electronic documentation system for six product discovery and development laboratories.
  • Prepared internal guidance documents and conduct training sessions on technical, regulatory and quality elements of biological product development.
  • Prepared and review FDA IND and BLA submissions for nationally and internationally manufactured plasma products.
  • Participated in international project teams to plan and execute regulatory and quality strategies for product development from Phase I to BLA.
   
2002 to present  

Biotechnology Product Consultant, NMR Biotech, Germantown, MD.

  • Provided expertise on biotechnology product development, laboratory quality practices, test method validation, product stability programs, and management of outsourced biopharmaceutical testing and manufacturing.
  • Prepared and review CMC sections for IND and BLA submissions for a wide variety of biological and biotechnological products, participate in IND/BLA meetings with regulators, and respond to regulatory reviewer questions.
  • Conducted quality audits of US and international facilities for cGMP and GLP compliance assessment. Design and review quality system documentation required for laboratory facilities for R&D, GLP and cGMP.
  • Designed and review protocols for product characterization, process and test method validation and product stability programs.
  • Presented seminars and training classes on the technical, regulatory and quality elements required in biotechnology product development and commercialization. Serve as subject matter expert in preparation and review of journal articles and book chapters.
  • Facilitated professional meetings on biopharmaceutical industry issues, including interactions among industry and regulatory bodies.
   
2001 to 2002  

Director of Technical and Regulatory Affairs, BioReliance Corporation, Analytical Services Division, Rockville, MD.

  • Served as the principal point of scientific and regulatory CMC interaction with over 150 worldwide pharmaceutical clients for their national and international product submissions for biotechnology products.
  • Provided expertise on product development requirements for recombinant proteins, monoclonal antibodies, plasma products, transgenic proteins, viral vectors, vaccines, and synthetic biomolecules (e.g. peptides and oligonucleotides).
  • Supported Analytical Division project managers and study directors to ensure successful design and execution of complex or custom projects.
  • Served as consultant to clients for technical and regulatory issues related to the CMC sections of INDs, BLAs, NDAs, annual reviews and supplements.
  • Consulted internally and externally on quality practices and compliance issues.
  • Developed and updated corporate Analytical marketing and training materials.
  • Supported the sales force and other members of the Sales and Marketing team as Analytical expert for client inquiries.
  • Delivered client presentations, professional seminars and training classes on biomolecular methods, regulatory product development guidelines, laboratory management, and quality/compliance practices.
  • Interacted with regulatory bodies as industry expert and served as client advocate to regulatory reviewers for product submissions.
   
1998 to 2000  

Director of Analytical Services Operations, BioReliance Corporation, Analytical Services.

  • Managed a $4 million department of 20-24 project managers, technical writers, study directors and analytical scientists to provide contract biomolecular analysis for the characterization, stability and release testing of over 200 bulk and formulated biotechnology products.
  • Designed and managed CMC analytical studies from pre-Phase I through Phase III and commercialization.
  • Supervised divisional quality system programs to ensure top-down GLP and cGMP compliance.
  • Served as the responsible divisional authority for quality audits conducted by project sponsors, national and international regulatory officials.
  • Implemented management systems to increase efficiency in resource scheduling and facilities utilization.
  • Developed budgets, monitored profits and costs, and operated laboratories and support functions at the highest levels of responsiveness to meet timelines and deliverables to clients.
  • Successfully recruited and retained highly skilled scientific staff in a competitive technical location.
  • Improved and expanded testing services and optimized laboratory growth to support new client projects.
   
1996 to 1998  

Senior Scientist, Bulk Biomolecular Products, Abbott Diagnostics Division, Analytical Development and Validation, Infectious Diseases Sector R&D, Chicago, IL.

  • Served as a senior technical supervisor of $2.2 million analytical R&D laboratory with 12 analysts developing and validating analytical methods for well-characterized biologicals used in CBER-regulated immunodiagnostic products.
  • Prepared molecular biology, manufacturing, purification, analytical characterization and lot release and stability sections for 12 IND, 6 PLA/BLA submissions, 25 PMA submissions, and 10 IPMF submissions to international regulatory agencies.
  • Acted as divisional R&D representative in major technology transfer projects of antibody and viral bulk products from contract manufacturing operations.
  • Directed outsourced analytical studies though contract testing organizations.
  • Provided expertise on Abbott test method and process validation strategies at the division and corporate levels.
  • Established the Abbott "Quality Technical Reviewer" model for approval of divisional analytical method validations and method SOPS to provide greater technical and quality expertise and increase efficiency.
  • Served as scientific specialist for two 40-member cGMP QC operations teams that manufactured and tested over 100 biotechnology bulk products from US and international plants.
   
1992 to 1996  

Senior Research Biochemist, Biomolecular Products, Abbott Diagnostics Division, Infectious Diseases Sector R&D, Chicago, IL.

  • Performed analytical biochemistry of over 75 natural and rDNA proteins, monoclonal and polyclonal antibodies, and synthetic peptides using characterization techniques such as HPLC, amino acid analysis, protein sequencing, peptide mapping, SDS-PAGE, scanning densitometry, IEF, immunoblots and assays, capillary electrophoresis, light scattering, surface plasmon resonance and protein identification via proteomic databases.
  • Prepared method SOPS, with transfer, training and troubleshooting of methods to a 30-member QA laboratory.
  • Established ISO-9000 compliance activities in the department, and served on corporate ISO certification task force.
  • Certified in the use of biohazardous and potentially biohazardous viral materials, including BL3 biohazard suite access.
  • Contributions to over 125 analytical test method characterizations and validations.
  • Performed direct supervision and review of 5 R&D laboratory scientists.
   
1988 to 1992  

Postdoctoral Research Fellow, University of Texas Dental Branch, Department of Biological Chemistry, Houston, TX.

  • Performed biochemical characterization of the protein-protein interactions between the bone protein osteopontin and other bone extracellular matrix proteins.
  • Techniques included tissue culture, protein purification and characterization, various ligand binding assays, in vitro and in vivo radiolabelling of proteins, SDS-PAGE, immunoblots, and glycoprotein analysis.
   
1984 to 1988  

Graduate Fellow, Rice University, Department of Biochemistry and Cell Biology.

  • Conducted molecular and cell biology studies of the subcellular translocation of glutamine synthetase and other urea cycle enzymes in shark and stingray tissues.
  • Techniques included DNA and RNA isolation, RIPA, nucleic acid blots, subcellular fraction purification, kinetic enzyme assays, immunohistochemistry, radiolabelled pulse/chase assays, IEF and SDS-PAGE.
  • Certified in the use of beta and gamma radiation emitters.
   
1980 to 1984  

Senior Research Assistant, University of Texas, Dental Science Institute, Houston, TX.

  • Purification and comparative biochemical analysis of proteins from microbial and animal models of biomineralization. Techniques included microbial culture, lipoprotein purification and characterization, in vitro mineralization assays, and Xray diffractometry.
  • Contributed to cartilage extracellular matrix studies aboard Space Shuttle missions for NASA.
   
1978 to 1980  

Research Assistant, University of Texas, Dental Science Institute, Houston, TX.

  • Analytical biochemistry of calcified cells and tissues for the functional characterization of mineralizing proteolipids.
  • Techniques included microbial and tissue culture, protein concentration and enzyme assays, and electron microscopy.

CONTINUING EDUCATION

2000   Optimizing Operational Performance, Dewitt, Boberg and Associates Corporate Training Program, Rockville
2000   Effective Time Management, Dewitt, Boberg and Associates Corporate Training Program, Rockville
2000   Supervising Technical Professionals, Dewitt, Boberg and Associates Corporate Training Program, Rockville
1997   Women as Leaders National Workshop, Center for Creative Leadership, NC
1996   Finance for Technical Managers, Professional Management Course
1996   Managing Priorities, Professional Management Course, Chicago
1996   Application of Statistics for Decision Making in Biopharmaceutical Development, Technical Professional Course, Chicago
1995   Statistics for Analytical Chemists, American Chemical Society Course, Chicago
1994   Leadership of Technical Professionals, Professional Management Workshop, Chicago
1994   Equity at Work, Professional Management Course, Chicago
1994   Team Leader Skills, Professional Management Workshop, Chicago
1994   Statistics for Process Control, Technical Professional Course, Chicago
1993   The New Manager: Supervising for Performance, Professional Management Workshop, Chicago
1993   Design of Experiments, Technical Professional Course, Chicago,

HONORS AND AWARDS
2002   Pharmaceutical Training Institute Trainer of the Year
2001   Pharmaceutical Training Institute Trainer of the Month
2000   BioPharm Featured Ten Outstanding Women of Biotech
1998   Abbott Diagnostics Division R&D Technology Team Award for Scientific Excellence
1997   Abbott Diagnostics Annual Outstanding Women Scientists
1997   Abbott Corporate Chairman's Award for Individual Performance Excellence
1997   Abbott Diagnostics Division Business Team Quality Award
1994   Abbott Diagnostics Division Infectious Diseases R&D Director's Award
1992   American Men and Women of Science
1990   Outstanding Young Investigator Award, Texas Society for Mineralized Tissue
1989   Outstanding Graduate Student Award, Association for Women in Science
1984   Rice University Graduate Fellowship
1979   Outstanding Young Women of America

ORGANIZATIONAL ACTIVITIES
Association for Biomolecular Resource Facilities: Active participant since 1994; member of the Education Committee, 1995-96 co-organized the 1995 Second Annual National Meeting in Boston; member of the Quality and Compliance Committee 1996 - present, Committee Chairman 1997-1999. Co-founded the Peptide Standards Project, a project sponsored by the ABRF and funded in 2001 by NIST to product new traceable biomolecular reference standards for cGMP analytical methods. Serve as consultant to ABRF members on laboratory quality practices and test method validations.

The Association for Women in Science: Active national member since 1980; in Houston, assumed various chapter Board positions over 12 years culminating in the Presidency, 1991-92. Contributed to a 250% growth in membership of the local chapter, managed funded programs for graduate scholarships, and career development workshops. Was an invited participant on the national AWIS Task Force on Diversity and the American Association of University Women (AAUW) Texas Roundtable on Gender Issues in Education, 1992. Presented the 1993 Explorathon Career Week AWIS keynote speech at the Cranbrook Institute of Science (Birmingham, MI) along with Dr. Eugenie Clark, University of Maryland marine biologist. Joined the Chicago AWIS chapter in 1993, became a member of the Board in 1994, and President in 1996. Lead a 100% increase in membership and tripled the chapter's activities, including establishing an ongoing seminar series on leadership and career development in the sciences.

COMMITTEE AND BOARD APPOINTMENTS:
2005-2010 U.S. Pharmacopeia, Nominated for Council of Experts in the Biologics and Biotechnology Initiative Program for Biotechnology and Natural Therapeutics/ Diagnostics
 
2005 California Separations Sciences Society (CaSSS), " WCBP Workshop Committee, Chair
 
2004 California Separations Sciences Society (CaSSS), " WCBP Workshop Committee, Co-Chair
 
2002-present California Separations Sciences Society (CaSSS), CMC Strategy Forum Co-Founder and Permanent Advisory Board Member
 
2002-present BioProcess International: Editorial Board Member
 
2001-present California Separations Sciences Society (CaSSS), " Well-Characterized Biotechnology Product (WCBP) Program Committee
 
2001-2003 Pharmaceutical Training Institute: Scientific Advisory Board
 
2001-present Association for Biomolecular Resource Facilities (ABRF): ABRF-NIST Peptide Standards Committee
 
2000-2002 BioProcessing Journal (Williamsburg Bioprocessing Foundation): Editorial Board Member
 
1996-1998 Association for Biomolecular Resource Facilities (ABRF):
Cofounder and Chairman, Quality and Compliance Committee
 
1994-1998 Association for Women in Science, Chicago:President and Board Member
 
1984-1992 Association for Women in Science, Houston:President and Board Member
   

CORPORATE ACTIVITIES
2000-2001 BioReliance, Job Enrichment Action Team - Corporate task force to improve career development opportunities
 
  BioReliance, Human Resources Team - Corporate task force to improve recruiting and retention activities
 
1999-2000 BioReliance, Strategic Financial Team - Senior executive task force to develop F&A metrics for operations
 
1997-1998 Abbott Laboratories, Instructor, Corporate Quality College, "GMP's in the Laboratory"
 
  Abbott Laboratories, Divisional Representative for R&D, Corporate Laboratory Council
 
1996-1997 Abbott Laboratories, Divisional Task Force on Test Method Characterization and Validation
 
1995-1996 Abbott Laboratories, Divisional Task Force on ISO 9000 Documentation and Quality Records
 
1993-1994 Abbott Laboratories, Sector Task Force on R&D Career Development

BIBLIOGRAPHY

Chapters
1. Ritter, N.M. (editor) Biotechnological/Biological Product Stability - Principles and Practices, in progress.

2. N. Ritter and J. McEntire, "Analytical Test Methods for Biological and Biotechnological Products", in Process Validation in Manufacturing of Biopharmaceuticals: Guidelines, Current Practices, and Industrial Case Studies (A.S. Rathore and G. Sofer, eds), CRC Press, Taylor and Francis Group, Boca Raton, FL, 2005, pp. 227-326.

3. Remmer, H.A., Ambulos, N.P., Bonewald, L.F., Dougherty, J.D., Eisenstein, E., Fowler, E., Johnson, J., Khatri, A., Lively, M.O., Ritter, N.M., and Weintraub, S. Synthetic Peptides as Certified Analytical Standards, in Peptide Revolution: Genomics, Proteomics and Therapeutics (Michael Chorev and Tomi K. Sawyer, eds), American Peptide Society (2003).

4. Calamai, E.G., Krishnamurthy, R., McEntire, J., Pritchett, T., Ritter, N.M., Seely, R. J., Seaver, S., Venkat, K (coordinators/reviewers), Guide to BioAnalytical Methods, BioPharm 14:12 (December, 2001).

5. Ritter, N., Smith, A., Fowler, B., Canova-Davis, E. Dougherty, J., and Ghrist, B. Laboratory Quality and Compliance, in The Encyclopedia of Bioprocess Technology: Fermentation, Biocatalysis, and Bioseparation, Vol. 4 (Editors-In-Chief, Michael C. Flickinger and Stephen W. Drew), John Wiley & Sons, Inc., pp. 2113-2115 (1999).


Peer-Reviewed Articles
1. Ritter, N.M., Advant, S., Simmerman, H., Advant, S., Hennessey, J., McEntire, J., Joneckis, C, and Mire-Sluis, A. WCBP CMC Strategy Forum: Industry and Regulatory Perspectives on Analytical Test Method Qualification versus Validation During Biotechnology Product Development, BioPharm (manuscript under FDA review).

2. Ritter, N.M. and Hayes, T. Good Development Practice (GDP): Quality Policies to Support Product Development Activities, BioProcessing International, (manuscript in progress).


3. Ritter, N. M. and McEntire, J. Determining Protein Concentration, Part 2: Validation, BioPharm (manuscript in progress).

4. Ritter, N. M. and McEntire, J. Determining Protein Concentration, Part 1: Methodology, BioPharm 15:4, 12-22 (April 2002).

5. Ritter, N.M. and Wiebe, M. Validating Critical Reagents Used in cGMP Analytical Testing: Ensuring Method Integrity and Reliable Assay Performance, BioPharm 14:5, 12-21 (May 2001).

6. Ritter, N. M. and Fowler, B. Analytical Laboratory Quality, Part I - General Quality Practices, J. Biomolecular Techniques, 12:4-10 (2001).

7. Ritter, N.M., Hayes, T., and Dougherty, J. Analytical Laboratory Quality, Part II - Analytical Method Validation, J. Biomolecular Techniques 12:11-15 (2001).

8. Smith, A. and Ritter, N. Considerations in the Validation of Bioanalytical Methods for Protein Characterization, Applied Biosystems Reporter 22:1994, Applied Biosystems, Inc. (1994).

9. Ritter, N.M., Farach-Carson, M.C. and Butler, WT. Evidence for complex formation between osteopontin and osteocalcin, J. Bone and Mineral Res. 7:877-885 (1992).

10. D'Souza,RN.,Happonen,R.P.,Ritter,N.M., and Butler,W.T. Temporal and spatial patterns of TGF-beta expression in developing rat molars, Arch. Oral Biol. 3 5:957-965 (1990).

11. Ritter, N.M., Smith, D.D., Jr., and Campbell, J.W. Glutamine synthetase in liver and brain of the Holocephalan Hydrolagus collei, J. Exp. Zool. 243:181-188 (1987).

12. Smith, D.D., Jr., Ritter, N.M. and Campbell, J.W. Glutamine synthetase isozymes in elasmobranch brain and liver tissues, J. Biol. Chem. 262:198-202 (1987).

13. Goldschmidt, M.C., Ritter, N.M. and Ennever, J.J. Age-dependency of apatite formation in Bacterionema matruchotti, Microbios Lett. 29:15-17 (1987).

14. Boyan,B.D.and Ritter,N.M. Proteolipid-lipid relationships in normal and vitamin-D deficient chick cartilage, Calcified Tiss. International 36:332-337 (1984).


Invited Professional Presentations
2003
1. USP Conference on Biotechnology and Biological Products, "ABRF Synthetic Peptides As Certified Analytical Standard Materials", Crystal City, VA, November.

CBI 5th Annual Stability Testing Program, full day workshop, "Design of Stability Programs for Proteins, Biologics and Macromolecular Systems", Philadelphia, PA, June.

IBC Conference on Bioassay Development and Validation, full day workshop: "Regulatory Requirements and Quality Practices for Bioassay Laboratories from R&D to GMP," Bethesda, MD, May.

Plasma Product Biotechnology Meeting: "Current CMC Requirements for the Development of Plasma Products: What to do When" Curacao, Netherland Antilles, April.

Pharmaceutical Training Institute: "How to Design and Execute Effective Stability Programs for Biotechnology Products,"(12 national classes, repeated by request)
2002

2002
Pharmaceutical Training Institute: "Conducting Laboratory Quality Assurance Audits,"(class founder and instructor), November - NC, December - Philadelphia

University of Maryland Graduate Program in Biopharmaceutical cGMP, "Analytical Assay Development and Validation", Spring and Fall semesters, Baltimore. MD
AAI Pharmaceutical Product Development Series: Stability Programs for Global Submissions, "The Evolution of Stability and Analytical Validation Requirements Throughout Product Development", March, Clearwater Beach, FL

IIR East Coast Annual Symposium, Analytical and Bioanalytical Methods Validation, chairperson and speaker, "Key Issues to Consider in Analytical Methods OOS Investigations", March, Philadelphia, PA

Pharmaceutical Training Institute: "How to Design and Execute Effective Stability Programs for Biotechnology Products,"(12 national classes, repeated by request).

Well-Characterized Biotechnology Product (WCBP) Joint CaSSS/FDA 6th Symposium: Interface of Regulatory and Analytical Sciences for Biotechnology Health Products; workshop co-facilitator (with CBER and CDER representatives) on "Transfer of Analytical Methods: Down the Hall, Over the Wall and Across the Ocean," January, Washington DC

2001
FDA CBER Internal Training Program, Analytical Method Development and Validation: "Assay Technology Transfer: From R&D to QA, From Location to Location," December, Rockville, MD.

University of the Sciences in Philadelphia, Cantor Series lecturer, "Biotechnology Drugs: Stability and Regulatory Issues," November, Philadelphia, PA

Williamsburg Bioprocessing Foundation Symposium: Raw Materials and Contract Services for Mammalian Cell Products, "Qualification of Critical Reagents Used in Analytical Laboratories," July, Newport Beach, CA.

IBC 4th International Conference: Well-Characterized Biologicals: Managing Pre-and Post-Approval Manufacturing Changes, (with Heather Simmerman, Amgen) "Method Qualification vs Method Validation: How Do You Define a Method's Intended Use?" June, Seattle

Institute for Validation Technology Conference: Investigation of Out-of-Specification Test Results, "Developing Effective Communications Between the Contract Testing Facility and Manufacturer: Who's On First?," April -Washington DC and May - London

2000
Institute for Validation Technology Conference: Laboratory Equipment Qualification and Validation, "What SOP? Adventures in Laboratory Training." April - Washington DC and May - London.

IBC International Conference: Formulation Strategies for Biopharmaceuticals Conference Co-founder, Co-organizer, and session chairperson, March, San Diego, CA.

Pharmaceutical Training Institute: "How to Design and Execute Effective Stability Programs for Biotechnology Products," class founder and speaker (6 national classes).

Williamsburg Bioprocessing Foundation Conference: Adenoviral Vector Testing: Product Characterization, and Methods Standardization, session chair and speaker, "Developing Guidelines and Standards for Analytical Assays," October, Washington, DC.

Williamsburg Bioprocessing Foundation Conference: Raw Materials and Contract
Services for Mammalian Cell Products, "Perspectives on Assuring the
Quality of Materials and Reagents Used by cGMP Analytical Laboratories," June, St.Louis, MO
1999
Cambridge Healthtech Institute Conference: Biological Safety Issues, session chair and speaker, "Overview of Current Analytical Techniques for Contaminants and Impurities in Biotechnology Products," October, Washington, DC.

Biotechnical Institute of Maryland, developed training class on "GMP Laboratory Compliance", Spring, Baltimore, MD.

1997
National Medical Health Consortium Biotechnology Conference: Technologies for
Characterization of Drug Candidates, invited speaker, "Accessing Technologies via
Analytical Laboratories: Evaluation of Laboratory Quality Practices," Washington,DC

1995
Association of Biomolecular Resource Facilities (ABRF) 2nd Annual National Meeting,
"Compliance Activities in Academic Core Facilities," Boston, MA.

1994
Characterizing Expressed Proteins: Structural Analysis of Recombinant Proteins Seminar Series,"Validation Strategies and Compliance Issues in Protein Sequencing and Amino Acid Analysis," San Diego and San Francisco, CA.

Juried Poster Presentations

Spirakes, T., Steffens, M., Schmidt, D., Lang, E., Singh, K., Nguyen, C., Ritter, N., and Watanabe, S. Monoclonal Antibody Characterization. ADD Technology Exchange (1998).


Ritter, N. Generic Characterization and Validation of Western Blot Tests, Abbott Corporate Technology Exchange (1997).

Ritter, N., Gunasekera, A., Adarnczyk, M. and Smith, D. Patient Sera Recognition of Synthetic Peptides via Surface Plasmon Resonance, Abbott Corporate Technology Exchange (1997).

Ritter, N., Baharani, S., Gao, Y., Falcon, R., Snyder, S. and Matayoshi, E. Synthetic Peptide Viscosity Characterization, ADD Technology Exchange (1996).

Ritter, N., Gao, Y., Wilson, M., Ownby, D., Qui, P., Bustamante, P., and Kundu, S. Viral Protein Characterization and Associated Impurities, ADD Technology Exchange (1996)

Ritter, N., Grant, D., Baharani, S., Dorsey, T., Gracey, D., Ho, I., and Green, P. Evaluation of an Outsourced Viral Preparation for Use in Diagnostic Assays, ADD Technology Exchange (1996)

Ritter, N., Lopez, M., and Kundu, S. Evaluation of Scanning Densitometers for Quantitative SDS-PAGE of Proteins, Abbott Corporate Technology Exchange (1995).

Ritter, N., Baharani, S., Schmidt, D., Wilson, M., Tarpey, L., Smith, A., Hoff, J., Lund, J., Nfikolajczak, D., Raymo, P., Zurbuch, D., and Bohrer, N. N-Terminal Amino Acid Sequencing, Peptide Mapping, and Isoelectric Focusing Validation Strategies for Proteins in FDA-CBER Products, ADD Technology Exchange (1994).

Walter, P., Junge, J., Gao,Y., Hoff, J., Gershon, B., and Ritter, N. Characterization of Rare Reagents for FDA-CBER Submissions, ADD Technology Exchange (1994).

Avenetti, K., Walter, P., Ritter, N., Ali, A. and Smith, D. HPLC gel permeation chromatography of recombinant proteins, Abbott Corporate Technology Exchange (1993).

Ritter, N.M., Farach-Carson, M.C. and Butler, W.T. Osteopontin binding to extracellular matrix proteins, Conn. Tiss. Res. 27:121 (1992).

Ritter, N.M., Farach-Carson, M.C. and Butler, W.T. In vitro complex formation between osteopontin and osteocalcin. J.Bone and Mineral.Res.6:304 (1991).

Sampson, H.W., Vogel, J.J., Ritter, N.M. and Hakim, F. Changes in sphingomyelin and non-collagenous proteins during intervertebral disk mineralization in progressive ankylosis mice, Conference on Cell-Mediated Calcification and Matrix Vesicles, Hilton Head, S.C. (1991).

D'Souza, R.N., Ritter, N.M., Edwards, D.K. and Butler, W.T. Temporal-spatial patterns of TGF-I expression in rat molar odontogenesis, J. Dent. Res. 69:121 (1990).

Ritter, N.M., Fujisawa, R.T., Farach-Carson, M.C. and Butler, W.T. Osteopontin-binding proteins from demineralized bone matrix and osteosarcoma cells, J. Cell Biol. 109:199a (1989).

Ritter, N.M., Smith, D.D., Jr. and Campbell, J.W. Glutamine synthetase isozymes and evolution of Chondrichthyes, Fed. Proc. 46:2275 (1987).

Ritter, N.M., Smith, D.D., Jr. and Campbell, J.W. Elasmobranch brain glutamine synthetase, Fed. Proc. 45:1734 (1986).

Ritter, N.M. and Boyan, B.D. A comparison of proteolipid concentration and calcification in normal and rachitic epiphyseal cartilage, Fed. Proc. 39:661 (1980).

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