Question

Antigen is defined as?
any forgein particle which may or may not induce immune system
antigen can always induce immune system
any particle which is present on antigen
none of these​

Answer 1

Answer:

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.

Answer 2

Explanation:

any substance (such as an immunogen or a hapten) foreign to the body that evokes an immune response either alone or after forming a complex with a larger molecule (such as a protein) and that is capable of binding with a product (such as an antibody or T cell) of the immune response.

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