slow reacting substance of anaphylaxismedical dictionary

<immunology> Potent bronchoconstrictor and inflammatory agent released by mast cells, an important mediator of allergic bronchial asthma.

A mixture of three leukotrienes (LTC4 mainly, LTD4 and LTE4)

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)