the activity of natural endothelins such as et-1 , et-2 , et-3 and of sarafotoxin s6b ( srftx ) as compared to that of the c-terminal hexapeptide et- ( 16-21 ) was investigated in several smooth muscle preparations in the presence of indomethacin , captopril , bestatin and thiorphan .
C0079284
endothelins
C0079281
et-1