What is one significant application of monoclonal antibodies?

The use of monoclonal antibodies for targeted cancer therapies is significant because these antibodies can be designed to specifically bind to cancer cells, enabling them to deliver therapeutic agents directly to the tumor. This targeted approach minimizes damage to surrounding healthy tissue and enhances the efficacy of the treatment. Monoclonal antibodies can work by blocking growth signals, marking cancer cells for destruction by the immune system, or delivering drugs directly to cancer cells, thus improving patient outcomes in the treatment of various cancers.

In contrast, the other options do not accurately reflect the primary applications or functions of monoclonal antibodies. While there are agricultural applications for some antibodies, they are not the sole focus or use. Monoclonal antibodies are not primarily involved in metabolic processes, which pertain to biochemical reactions within living organisms. Additionally, measuring body temperature is unrelated to the function of monoclonal antibodies; this task is typically performed using thermometers or other devices specifically designed for temperature measurement.