Posts Tagged ‘antibodies’

How Vaccines prevent Infectious Diseases

The immune system is your body’s natural defense system. The first time you are exposed to a virus or bacteria, the immune system can be slow to make antibodies. That is because it does not recognize the virus or bacteria. While your immune system is making new antibodies, the virus or bacteria multiplies and spreads…

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The Immune System

The immune system is made up of special organs, cells, and chemicals that fight infection. The main parts of the immune system are: • White blood cells are the key players in your immune system. They are made in your bone marrow and are part of the lymphatic system. White blood cells move through blood…

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