ANATOMY

Detailed explanation-1: -phagocytes (say: FAH-guh-sytes), which chew up invading germs. lymphocytes (say: LIM-fuh-sytes), which allow the body to remember and recognize previous invaders.

Detailed explanation-2: -Some types of white blood cells, called phagocytes (FAH-guh-sytes), chew up invading organisms. Others, called lymphocytes (LIM-fuh-sytes), help the body remember the invaders and destroy them.

Detailed explanation-3: -B lymphocytes are the cells of the immune system that make antibodies to invading pathogens like viruses. They form memory cells that remember the same pathogen for faster antibody production in future infections.

Detailed explanation-4: -The immune cells can recognize any bacteria or foreign substances as invaders. Immune cells, known as natural killer cells, begin to destroy the invaders with a general attack. Although this attack can kill some of the invaders, it may not be able to destroy all of them or prevent them from multiplying.

Detailed explanation-5: -A type of immune cell that is made in the bone marrow and is found in the blood and in lymph tissue. The two main types of lymphocytes are B lymphocytes and T lymphocytes. B lymphocytes make antibodies, and T lymphocytes help kill tumor cells and help control immune responses.