Investing in Adult Stem Cell Research

A CNN Money article from August talked about how biotech companies working with adult stem cells are getting closer to producing treatments. The article mentions three companies in particular:

1. ASTM (Aastrom Biosciences, Inc.) -- working on treatment to regrow bone tissue
   
2. OSIR (Osiris Therapeutics) -- IPO'd on Aug 4. Just began Phase 3 trials for Prochymal for treatment of Acute Graft vs. Host disease, and Phase 2 trials (also Prochymal) for Crohn's disease.
   
3. CYTX (Cytori Therapeutics, Inc.) -- working on using patient's adipose tissue for breast reconstruction