What are proteins produced by the body that identify and destroy invaders called?

Proteins produced by the body that identify and destroy invaders are called antibodies. Antibodies are specific proteins created by the immune system in response to the presence of antigens, which are foreign substances such as viruses or bacteria. Each antibody is designed to bind to a specific antigen, marking it for destruction by other immune cells or neutralizing its harmful effects.

In the context of the immune response, antibodies play a crucial role in recognizing and neutralizing pathogens, thus contributing to the body’s defense mechanism. They are essential for the adaptive immune response, providing long-lasting protection against previously encountered invaders.

The other terms listed, while related to the immune system, refer to different components. Antigens are substances that trigger an immune response but do not identify and destroy invaders themselves. White blood cells are a broader category that includes various types of cells in the immune system, including those that produce antibodies. Platelets are involved in blood clotting and do not have a role in identifying or destroying pathogens.