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Immunohistochemical analysis of free fatty acid receptor 2 (FFAR2) expression. Sections of normal gallbladder and gallbladder cancer (GBC) (upper panel), of paired normal gastric mucosa and gastric cancer (middle panel), and of paired normal colon mucosa and colorectal cancer (CRC) (lower panel) were subjected to immunohistochemical staining with antibody to FFAR2. Scale bars = 100 μm.
