| delayed hypersensitivity r. |
a reaction of cell-mediated immunity, named in contrast to immediate hypersensitivity reactions because its onset is 24 to 72 hours after the antigenic challenge; the term is usually used to denote the subset of type IV hypersensitivity reactions (Gell and Coombs classification) involving cytokine release and macrophage activation, as opposed to direct cytolysis, but can be used more broadly, even sometimes being used synonymously with type IV hypersensitivity r. The classic delayed hypersensitivity reaction is the tuberculin reaction observed in skin testing.
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| delayed l. |
postponed l.
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| delayed m. |
menstruation the first appearance of which is delayed beyond the sixteenth year.
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| delayed primary c. |
healing by third intention; see under healing..
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| delayed r. |
a reflex which occurs some time after the stimulus provoking it has been received.
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