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HOW DOES IMMUNITY DEVELOP?
PRIMARY RESPONSE AND SECONDARY RESPONSE
Primary response is the first invasion of a pathogen.

Secondary response is when subsequent invasions take place.


IMMUNITY
PRIMARY RESPONSE
1. Pathogens enter the body.
2. There are few lymphocytes in the body.
3. Pathogens release toxins and the body shows…

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ACTIVE-ARTIFICIAL IMMUNITY
This is developed by a vaccination; the vaccine consists of an inactive pathogen. This is active because the body produces
memory cells and tries to destroy which allows the person to be immune for a lifetime.

PASSIVE-NATURAL IMMUNITY
Ready-made antibodies that have already been produced are transferred to…

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