slow-reacting substance of anaphylaxis

slow–reacting substance of anaphylaxis

noun

Definition of SLOW-REACTING SUBSTANCE OF ANAPHYLAXIS

: 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