PATHOLOGY

Detailed explanation-1: -A cell that is part of the immune system and helps the body fight infections and other diseases. Immune cells develop from stem cells in the bone marrow and become different types of white blood cells.

Detailed explanation-2: -The main parts of the immune system are: white blood cells. antibodies. complement system.

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. As long as your immune system is running smoothly, you don’t notice that it’s there.

Detailed explanation-4: -1.1st line of defense (not a part of the immune system): The skin (physical defense) and chemicals (the linings of the body cavities) act as barriers to infection. 2.