binding was inhibited in a concentration-dependent manner by somatostatin-14 ( half-maximal inhibition at 2.0 +/- 0.1 nm ) and by somatostatin-28 ( 0.8 +/- 0.1 nm ) but not by structurally unrelated peptides .
C0037659
somatostatin-14
C0074854
somatostatin-28