Medical Definition of Slow-reacting substance

1. 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. (05 Mar 2000)



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Lexicographical Neighbors of Slow-reacting Substance

slovenliest
slovenlike
slovenliness
slovenlinesses
slovenly
slovenly person
slovenly woman
slovenness
slovenry
slovens
slow
slow-cook
slow-motion
slow-moving
slow-reacting factor of anaphylaxis
slow-reacting substance (current term)
slow-walk
slow-witted
slow-wittedness
slow as a snail
slow ball
slow bowler
slow burn
slow burns
slow channel-blocking agent
slow clap
slow combustion
slow cooker

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