any substance that stimulates the immune system to produce antibodies

LYMPHATIC SYSTEM

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	antigen
B	pathogen
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen.

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