ANATOMY

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: -In general, your body fights disease by keeping things out of your body that are foreign. Your primary defense against pathogenic germs are physical barriers like your skin. You also produce pathogen-destroying chemicals, like lysozyme, found on parts of your body without skin, including your tears and mucus membranes.

Detailed explanation-3: -The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.

Detailed explanation-4: -Whether, at any one time, your immune system is detecting and neutralising harmful substances, tackling changes in the body that pose a risk of disease, or simply defending you against those potentially perilous bacteria and viruses without you even knowing, there can be no doubt it is constantly doing vital work.