SME
Grade 9 Science · Problem type
The immune response in stages
Use this for “What do helper T cells do in the adaptive immune response?”
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The response runs from the antigen to antibodies and killer T cells, and leaves memory cells.
Assumptions
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An antigen is a molecule on a pathogen that the immune system recognizes as foreign.
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The response is specific: only the B and T cells whose receptors fit that antigen are chosen.
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