Brain region (mouse) Neocortex Hippocampus Thalamus Cerebellum, mesencephalon, medulla oblongata Major splice variant Cav2.3c Cav2.3c Cav2.3c Cav2.3e Miscellaneous Minor amounts of Cav2.3e Minor amounts of Cav2.3e Substantial amounts of Cav2.3e and Cav2.3f minor amounts of Cav2.3a In ...