In which type of diseases are monoclonal antibodies commonly utilized?

Monoclonal antibodies are a class of therapeutics designed to specifically target and bind to certain proteins or cells in the body, thereby altering disease processes. Their versatility allows them to be employed in a variety of disease contexts.

Monoclonal antibodies have become fundamental tools in the treatment of cancer, where they can target specific antigens on tumor cells, helping to activate the immune system against cancer or delivering cytotoxic agents directly to the tumors. In autoimmune diseases, these therapies can inhibit the action of specific cells or inflammatory mediators that contribute to disease pathology. Additionally, in the context of infections, certain monoclonal antibodies can neutralize viruses or pathogens, providing both therapeutic and preventive benefits.

This multifaceted therapeutic approach highlights the utility of monoclonal antibodies across different types of diseases, making them applicable not only in cancer and autoimmune conditions but also in infectious diseases, which aligns with the correct answer.