👉 Opsonotherapy is a type of therapy that uses antibodies or other immune cells to neutralize or destroy cancer cells. It was developed in the 1950s and 60s by Dr. Robert H. Smith, who developed the first opsonophagocytic cell therapy for cancer. Opsonotherapy involves using antibodies against specific antigens to target cancer cells and destroy them. However, it is still a relatively new field of medicine and there are many challenges that need to