No staining was observed in negative controls of COX-1 and COX-2 in either normal GI tissues or carcinoid tumors. COX-1 and -2 Expressions in GI Carcinoid Tumors All GI carcinoid tumors exhibited ...

Hematoxylin and eosin staining was performed using standard procedures ... and stained with antibodies for alpha smooth muscle isoactin (α-SMA; DakoCytomation, Carpinteria, CA); F4/80 (AbD ...