prosomatostatin ( pro-s ) and its bioactive posttranslational products , somatostatin-14 ( s-14 ) , somatostatin-13 ( s-13 ) , and somatostatin-28 ( s-28 ) , were measured in human plasma by the use of immunoglobulins to the nh2-terminus of s-28 conjugated with agarose to separate them and , thereafter , by ria with an antiserum recognizing the cooh-terminus of pro-s , and by specific ria for the nh2-terminus of s-14 and pro-s .
C0074854
s-28
C0037659
s-14