The NIH supports a number of Repositories for the acquisision, storage and distribution of chemical and biological samples, and standards to researchers worldwide. In many cases there is no, or only a nominal fee for samples. The repositories listed below are sponsored by NCI/DTP. Please visit the individual Repository's homepage for inventory details, distribution policies and procedures.

• Biological Resources Branch Preclinical Repository:
  A repository of bulk cytokines, monoclonal antibodies, cytokine standards, and other research reagents.
• Biological Testing Branch Tumor Repository:
  A repository of in vitro cell lines, transplantable animal and human tumors and microarrays.
• Open Chemical Repository:
  A repository of >140,000 small molecules and pure natural products.
• Natural Products Repository:
  A repository of natural product extracts from marine and plant sources collected worldwide.
• Radiolabeled Materials Repository:
  A repository of more than 100 radiolabeled samples for research and distribution to qualified, licensed research laboratories.

• NCI- Chemical Carcinogen Reference Standards
• NCI- Clinical Repository
• NCI- Cooperative Human Tissue Network
• NCI- Human HIV Specimens
• NCCR- Mouse Mutant Gene Resource
• NCCR- National Repository for Transgenic Mice and Rats
• NHLBI- Biologic Specimen Repository
• NIA- Cell Repository
• NIAID- AIDS Research & Reference Reagent Repository
• NIAID- Gene Knockout/Transgenic Mice- NIAID Exchange Program
• NIAID- Malaria Research and Reference Reagent Resource Center
• NIAID- Reference Reagent Repository
• NIAID- TB Research Materials & Vaccine Testing Contract

updated 11-20-2007