Antigen is a substance which
- Adestroys harmful bacteria
- Bis used to treat poisoning
- Clowers body temperature
- Dstimulates formation of antibodyCorrect
Explanation
An antigen is any foreign substance, such as a virus, bacteria, or toxin, that enters the body and is recognized by the immune system as a threat. The primary function of an antigen is to trigger an immune response, specifically by stimulating specialized white blood cells to produce antibodies. These antibodies then bind to and neutralize the specific antigen to protect the body. Therefore, the defining characteristic of an antigen is its ability to stimulate the formation of antibodies.
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