Monoclonal antibodies are laboratory-made proteins that act like human antibodies in the immune system. They are designed to specifically target a certain antigen, such as those found on cancer cells, and help the immune system respond better to allow the body to find and attack cancer cells more effectively. Monoclonal antibodies are used to treat various diseases, including some types of cancer, and are more targeted than some other types of treatments, making them more successful at treating certain diseases. These antibodies are clones of the bodys antibodies and are made in a laboratory to stimulate the immune system. Monoclonal antibodies are used as a form of immunotherapy and targeted therapy, as they can mark cancer cells so that the immune system will better recognize and destroy them, and also bring immune cells close to cancer cells to help kill them. They are administered mainly as IV solutions and are known for their standard quality across all production batches, which is important for their use as therapy and diagnostics. Monoclonal antibodies have revolutionized modern medicine by providing personalized therapeutics based on individualized disease characteristics.