National Disease Research Interchange
- Providing human cells, tissues and organs for research purposes. Explains tissue sources and applications, and includes a biospecimen catalog for authorised researchers. Based in Philadelphia, USA.
- http://www.ndriresource.org/

3DM Inc.
- Biotechnology company marketing a synthetic hydrogel for cell culture applications.
- http://www.puramatrix.com/

Cybrdi Inc.
- Developer and supplier of tissue arrays, as well as offering staining and hybridization services. Includes details of products and applications. Maryland, USA.
- http://cybrdi.com/

Bio-options, Inc.
- Provides human tissues and biological materials for molecular research, drug development and diagnostic testing. Also a repository of frozen and fixed specimens of major tumor types and diseased states.
- http://www.biooptions.com

Aastrom Biosciences, Inc.
- Develops proprietary process technologies and devices for cell therapy applications, including stem cell therapies and gene therapy.
- http://www.aastrom.com/