Osiris Therapeutics is a stem cell company, which focuses on developing and marketing products to treat medical conditions in the inflammatory, cardiovascular, orthopedic and wound healing markets. The company operates its business through two segments: Therapeutics and Biosurgery segment. The Therapeutics segment focuses on developing biologic stem cell drug candidates from readily available and non-controversial sources. One of its products, Stromagen was used to treat breast cancer in clinical trials.