separation of somatostatin-like immunoreactivity by size exclusion high-performance liquid chromatography showed a marked increase of immunoreactivity in fractions containing the somatostatin precursor ( by 200 % ) and less prominently of somatostatin-14 and somatostatin-28 ( by 60 and 80 % , respectively ) .
C0037659
somatostatin-14
C0074854
somatostatin-28