Subtype-selective expression of the five somatostatin receptors (hSSTR1-5) in human pancreatic islet cells: a quantitative double-label immunohistochemical analysis. - Kumar,U.; Sasi,R.; Suresh,S.; Patel,A.; Thangaraju,M.; Metrakos,P.; Patel,S.C.; Patel,Y.C. (Diabetes, 1999)