I think Micromet (MITI) is one to keep an eye on in the antibody space. However, I'd like to see them sign a nice partnership and get a nice chunk of cash upfront as their finances are not exactly in order. They expected to sign two partnerships in 2009 and did just ink Bayer (http://finance.yahoo.com/news/Micromet-Enters-Into-prnews-14027982.html ) to a deal worth about $6 million with possibly more downstream.