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The occurrence of two somatostatin precursors, PSS1 and PSS2, yielding S-14 (SS1) and the variant [Pro2, Met13]S-14 (SS2), has been recently reported in the frog Rana ridibunda. The evolutionary(More)
Although the existence of two somatostatin variants (SS1 and SS2) has now been demonstrated in the brain of mammals, amphibians, and fish, only one isoform of somatostatin (SS1) has been(More)
The anatomical distribution of somatostatin-immunoreactive structures and the autoradiographic localization of somatostatin binding sites were investigated in the brain of the African lungfish,(More)
The anatomic distribution and biochemical characteristics of the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) were investigated in the central nervous system of the frog,(More)