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What are germs, such as viruses, are intruder-like substances?

A.antibodies
B.abstinence
C.antigen
D.none of the above

User Moxor
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1 Answer

4 votes

Answer:

c.

Step-by-step explanation:

An antigen is any substance that causes your immune system to produce antibodies against it.

User OwChallie
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