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DEFENCE AGAINST DISEASE IMMUNITY
Active Immunity |
Passive Immunity |
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Natural immunity
is active or passive immunity acquired from natural
sources.
Artificial immunity
is active or passive immunity acquired by medical
intervention.
SUMMARY
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Active immunity |
Passive immunity |
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Natural immunity |
Real infection followed by establishment of
memory cells |
Maternal antibodies pass to foetus across
placenta or to infant via colostrum of milk.
No memory cells. |
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Artificial immunity |
Immunisation by vaccine followed by
establishment of memory cells |
Antibiotics produced in another animal and
purified from their blood serum.
No memory cells |
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© Paul Billiet 2009 |
The Open Door Web Site