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An important characteristic of an antigen is that it be perceived to be foreign/non self.

What is an antigen?

  • Any substance that triggers the production of antibodies by your immune system is referred to as an antigen.
  • It indicates that your immune system is attempting to combat a drug that it does not identify.
  • Toxins, chemicals, germs, viruses, or any other materials, such as pollens, etc., are examples of antigens.
  • Inside the body, an antigen may also develop. A molecule, chemical structure, foreign particle, pollen grain, or any other substance that can attach to a particular antibody or T-cell receptor is called an antigen.
  • An immunological reaction may be brought on by the presence of antigens in the body.
  • A foreign substance that enters your body is known as an antigen.
  • This can include venom, allergies, germs, viruses, fungi, and other other types of poisons.

To learn more about antigen, refer

https://brainly.com/question/905225

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