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3. Schaffalitzky de Muckadell. Radioimmunoassay of vasoactive intestinal polypeptide (VIP) in plasma;Fahrenkrug;J. Lab. clin. Med.,1977
4. Fluorescent Antibody Methods;Goldman,1968
5. Cellular localization somatostatin in endocrine-like cells and neurons of the rat with special reference to the A1 -cells of the pancreatic islets and to the hypothalamus;Hökfelt;Acta endocrin.,1975