Allergy hypersensitivity that occurs from antibody reaction agent being inhaled, consumed or present systemically (blood) causing IgE to bind to mast cells $rightarrow$ histamine release, describes

SIGNALLING IMMUNOLOGY CANCER

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Allergy hypersensitivity that occurs from antibody reaction agent being inhaled, consumed or present systemically (blood) causing IgE to bind to mast cells

A	delayed response
B	immediate or acute response
C	immunodefiency
D	auto-immune disease

Explanation:

Detailed explanation-1: -Hypersensitivity reactions are exaggerated or inappropriate immunologic responses occurring in response to an antigen or allergen. Type I, II and III hypersensitivity reactions are known as immediate hypersensitivity reactions because they occur within 24 hours of exposure to the antigen or allergen.

Detailed explanation-2: -Type I reactions (i.e., immediate hypersensitivity reactions) involve immunoglobulin E (IgE)–mediated release of histamine and other mediators from mast cells and basophils. Examples include anaphylaxis and allergic rhinoconjunctivitis.

Detailed explanation-3: -Type I: reaction mediated by IgE antibodies. Type II: cytotoxic reaction mediated by IgG or IgM antibodies. Type III: reaction mediated by immune complexes. Type IV: delayed reaction mediated by cellular response. 06-Mar-2023

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