EVERYDAY SCIENCE

Detailed explanation-1: -Some directly fight intruders. They are attracted towards the infective agents, then surround and engulf them. Once inside the cell, these white cells then release chemicals that break the organism down and destroy it. Other white cells, called lymphocytes, target attacks in another way, by making antibodies.

Detailed explanation-2: -White blood cells are part of the body’s immune system. They help the body fight infection and other diseases. Types of white blood cells are granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes (T cells and B cells).

Detailed explanation-3: -Human leukocytes, including macrophages and neutrophils, are phagocytic immune cells that capture and engulf pathogens and subsequently destroy them in intracellular vesicles.

Detailed explanation-4: -They can engulf the ‘foreign’ cell and digest them. This is called phagocytosis. They can produce antitoxins-antitoxins counteract the toxins that invading bacteria may produce. They produce antibodies-this is a bit more complicated… so we’ll talk about that now!