Term
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Definition
| any immune response against a foreign antigen that is exaggerated beyond the norm |
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Term
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Definition
| localized or systemic reactions that result from the release of inflammatory molecules (ie, histamine) in response to an antigen. these reactions are termed immediate hypersensitivity because they develop within sec or min following contact with antigen. commonly called allergies. 2 parts- sensitization and degranulation. |
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Term
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Definition
| an immediate hypersensitivity response against an antigen |
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Term
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Definition
| an antigen that stimulates an allergic response |
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Term
| sensitization of type I hypersensitivity |
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Definition
| following initial exposure to allergens, the plasma cells of allergic individuals secrete IgE, which binds very strongly with its stem to 3 types of defense cells- mast cells, basophils, and eosinophils- sensitizing these cells to respond to future exposures to the allergen |
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