Antibodies produced from a single B-cell clone that have specificity for one specific antigen are known as monoclonal antibodies. Monoclonal antibodies are highly specific and can recognize and bind to a single target molecule, such as a particular protein found on the surface of cancer cells. This specificity allows them to potentially distinguish between cancerous cells and healthy cells, aiding in diagnostic and therapeutic applications. Monoclonal antibodies have revolutionized medicine and are widely used in various fields, including cancer treatment, autoimmune diseases, and infectious diseases.