the effects of three forms of endothelin ( et ) , et-1 , -2 and -3 , on intracellular free ca2+ concentration ( [ ca2+ ] i ) and their receptor binding activities have been compared in murine fibroblast cell line swiss 3t3 as well as diploid human fibroblast cell line fs-4 .
C0079284
endothelin
C0079281
et-1