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Laser scanning confocal micrographs (LCSMs) of rat circumvallate taste buds labeled with antibodies against the three isoforms of the IP3 receptor. (A). IP3R1 immunoreactivity (IR), (B) IP3R2 IR, (C) IP3R3 IR, (D) no primary antibody control for IP3R3. The scale bar in each figure represents 10 μm.
