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Immunity

Immunity. Mr. Jeff Peterson Fulbright Exchange Teacher from USA. Immunity. Antigen – anything foreign in the body. Examples are bacteria and microbes Antibodies – immune system response to antigen. Immunity. Primary barrier to infection is the skin .

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Immunity

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  1. Immunity Mr. Jeff Peterson Fulbright Exchange Teacher from USA

  2. Immunity • Antigen – anything foreign in the body. • Examples are bacteria and microbes • Antibodies – immune system response to antigen

  3. Immunity • Primary barrier to infection is the skin. • Microbes still get in and can cause • Direct damage to body tissue and blood • Indirect damage by producing toxins

  4. Immunity • Immunity – bodies resistance to a specific antigen. The body has antibodies…

  5. Immunity • Natural Immunity – from mothers milk or blood. • Acquired Immunity – developed in life. • Active: a person is exposed to an antigen and the body produces antibodies to fight it. • Passive: a person is given blood which contains the antibodies. The body can not produce new antibodies so effects are short term.

  6. Immunity • Vaccination – weak or dead antigen that allows body to develop antibodies. • First developed by Edward Jenner (cow pox)

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