“reacting substance”

The following 2 entries include the term reacting substance.

slow-reacting substance

noun

: slow-reacting substance of anaphylaxis —abbreviation SRS

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slow-reacting substance of anaphylaxis

noun

: a mixture of three leukotrienes produced in anaphylaxis that causes contraction of smooth muscle after minutes in contrast to histamine which acts in seconds and that is probably responsible for the bronchoconstriction occurring in anaphylaxis —abbreviation SRS-A

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