in cultured rat aortic smooth muscle cells , [ 125i ] endothelin ( et-1 ) bound to an apparent single class of high affinity recognition sites with a dissociation constant of 1.84 +/- 0.29 nmol/l and a maximum binding of 62 +/- 10.5 fmol/10 ( 6 ) cells .
C0079284
endothelin
C0079281
et-1