See Also: slow-reacting substance(medicine)
slow reacting substance of anaphylaxis(medicine)
Slow-reacting substance of anaphylaxis (SRS-A)(health)
slow-reacting factor of anaphylaxis(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
cross-reacting antibody(medicine)
Cross-reacting material(medicine)
cross-reacting agglutinin(medicine)
indirect reacting bilirubin(medicine)
minimal reacting dose(medicine)

slow-reacting substance (medicine)


slow-reacting substance
Slow-reacting substance of anaphylaxis (SRS-A), a leukotriene of low molecular weight which is released in anaphylactic shock and produces slower and more prolonged contraction of muscle than does histamine; it is active in the presence of antihistamines (but not epinephrine) and seems not to occur preformed in mast cells, but as a result of an antigen-antibody reaction on the granules.

Compare: peptidyl leukotrienes.

Synonym: slow-reacting factor of anaphylaxis.