GTC Biotherapeutics Inc

GTC Biotherapeutics, Inc. develops therapeutic proteins in the milk of transgenic animals. The Company's recombinant human antithrombin III program is in a pharmacokinetic clinical study for patients with a hereditary deficiency of this blood protein. GTC's other programs are developing monoclonal antibodies and immunoglobulin fusion proteins for rheumatoid arthritis, AIDS, and cancer.