Which Characterizes Immediate Hypersensitivity

question 72

Multiple Choice

Which characterizes immediate hypersensitivity?

• A) Antigen-presenting cells pick up the antigen and initiate a T cell response.
• B) Upon first exposure to the antigen, B cells make large amounts of IgA antibodies, which bind to basophils and mast cells.
• C) Some cases can be treated using desensitization, whereby small amounts of allergen are injected to stimulate a response from cytotoxic T cells.
• D) Upon subsequent exposures to the antigen, mast cells and basophils release large amounts of histamine.
• E) It does not include food allergies.

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Definitions:

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