I learned of the existence of this company from a Zacks tag. I've been buying healthcare for the past several months, but have been a little leary about the biotech component of the industry. I bought 1000 shares while I look into the company. It looks like there is a lot of potential, but too risky to invest much. I might look for a biotech fund. I'm not suggesting that ATHX is any more risky than other small biotech, it's just the nature of the industry.