Recently Stanford University researchers have shown enhanced cancer cells killing by injecting cancer model mice with CD47 monoclonal antibody and then anti-cancer drugs, since CD47 expresses” do not eat me signals” on cell surface of cancer cells, blocking CD47 exposes the cancer cells and prevent them from hiding the Macrophages and dendritic cells and make them more susceptible to chemotherapy and immunotherapy. This evidence concerns the gene CD47 and cancer.