This is what I'm going on:

Unless you are a long-time cryonicist or a surgeon, you may not have heard of BioTime before. This company, recently profiled for its innovative stem cell research in Life Extension Magazine, is best known for producing the blood-volume expander Hextend, which was initially developed by Trans Time, an early cryonics company performing ultra-profound hypothermia research. Realizing the potential for Hextend’s conventional medical applications, BioTime was formed and, as they say, the rest is history.

http://www.evidencebasedcryonics.org/2008/10/12/biotimes-quest-to-defeat-aging/