Main Entry: slow–reacting substance of anaphylaxis Function: noun : a mixture of three leukotrienes produced in anaphylaxis that causes contraction of smooth muscleafter minutes in contrast to histamine which acts in seconds and that is prob. responsible for the bronchoconstriction occurring in anaphylaxis —abbreviation SRS-A
slow-reacting substance of anaphylaxisn. Abbr. SRS-A A substance released in anaphylactic shock that produces slower and more prolonged contraction of muscle than does histamine. Also called slow-reacting factor of anaphylaxis.
