EVERYDAY SCIENCE

Detailed explanation-1: -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.

Detailed explanation-2: -The immune system includes certain types of white blood cells. It also includes chemicals and proteins in the blood, such as antibodies, complement proteins, and interferon.

Detailed explanation-3: -Antibodies are proteins produced by the immune system in response to infection. They are an important part of the body’s defence system as they work to destroy disease-causing organisms (such as viruses or bacteria) and block them from infecting human cells.

Detailed explanation-4: -Organs and tissues important to the proper functioning of the immune system include the thymus and bone marrow, lymph nodes and vessels, spleen, and skin.

Detailed explanation-5: -Antibodies protect against bacteria that multiply outside cells mainly by facilitating uptake of the pathogen by phagocytic cells that are specialized to destroy ingested bacteria.