Mast cell activation by pedicellarial toxin of sea urchin, Toxopneustes pileolus.

Abstract

Pedicellarial toxin, partially purified from the sea urchin Toxopneustes pileolus, dose-dependently and time-dependently caused histamine release from rat peritoneal mast cells. Pedicellarial toxin induced a rapid initial rise in [Ca2+]i within several seconds which was followed by a further slower increase of [Ca2+]i (second rise). The toxin induced a dose… (More)

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