Additional file 1: Figure S1. of Somatostatin and CXCR4 chemokine receptor expression in hepatocellular and cholangiocellular carcinomas: tumor capillaries as promising targets

Positive controls for immunostainings. Typical examples for positive control immunostainings for somatostatin receptors (SSTR) and CXCR4. SSTR1, SSTR2, SSTR3 and SSTR5: pancreatic islets; SSTR4: human cortex; CXCR4: germinal center of a lymph node. Immunohistochemistry (red-brown color), counterstaining with hematoxylin; scale bar: 20 μm. (TIFF 16836 kb)