IMMUNOLOGY

Detailed explanation-1: -In response to such an infection, B-cells can differentiate into plasma cells-the body’s antibody-producing factories. Plasma cells produce large proteins called immunoglobulins, or antibodies that attach to the surface of foreign agents. These antibodies serve as flags or flares over a battle site.

Detailed explanation-2: -The immune system recognizes invaders by their antigens, which are proteins on the surface of the invading cells (see Figure 1). Every cell or substance has its own specific antigens, and a person’s cells carry “self-antigens” that are unique to that individual.

Detailed explanation-3: -The acquired immune system, with help from the innate system, makes special proteins (called antibodies) to protect your body from a specific invader. These antibodies are developed by cells called B lymphocytes after the body has been exposed to the invader. The antibodies stay in your child’s body.