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7.Human Health and Disease
medium
Antigen is a substance which
A
lowers body temperature
B
destroys harmful bacteria
C
triggers the immune system
D
is used as an antidote to poison
(AIIMS-2010)
Solution
Antigen is the only foreign substance which triggers immune system by way of antibody formation. These antibodies neutralize antigen by antigen-antibody reaction.
Standard 12
Biology