MICROANATOMY

Detailed explanation-1: -Answer: The proteins that are produced in response to an antigen are called antibodies. It is a Y-shaped protein produced by white blood cells called B lymphocytes (or B cells) that the immune system uses to recognize and destroy foreign substances or pathogens, called antigens.

Detailed explanation-2: -Optimal phagocytosis requires the presence of both antibodies and complement components on the particle. Particles opsonized with IgG or IgM antibodies can activate complement through the classical pathway, resulting in binding of fragments of complement components to the particle.