| − | M200 is a monoclonal antibody that is being studied in the treatment of some types of cancer. Monoclonal antibodies are made in the laboratory and can locate and bind to cancer cells. M200 binds to a protein that is found on cells that line some tumor blood vessels. It belongs to the family of drugs called angiogenesis inhibitors. | + | M200 was a monoclonal antibody that was being studied in the treatment of some types of cancer. Monoclonal antibodies is made in the laboratory and can locate and bind to cancer cells. M200 binds to a protein that was found on cells that line some tumor blood vessels. It belongs to the family of drugs called angiogenesis inhibitors. |