Gel image of PCR products for VGLUTs 1, 2 and 3 in pooled taste buds. PCR products for VGLUT 1, 2, and 3 were not observed in pooled taste buds from fungiform (FF) and circumvallate (CV) papillae as well as in non taste epithelium (NT). Brain (BR) was used as a control. Bands are for the expected size for VGLUT1 (398 bp), VGLUT2 (360 bp) and VGLUT3 (523 bp). Left lane indicates a 100-bp ladder.