3 · en
Short, simple sentences with “antigen”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
The antigen is a foreign substance that triggers an immune response in the body.
Antigens are substances that enter an animal organism and under the right conditions are capable of provoking the formation of antibodies; the Rh in blood is an antigen.
An antigen is any substance capable of inducing a specific immune response when introduced into the tissues of an animal. The response may consist of antibody production in conjunction with the development of cell-mediated immunity, or specific immune tolerance.
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