Immunofluorescence of SV2A, SV2B and SV2C in mouse brain at post-natal day 7 (P7). Fluorescent images of SV2A, SV2B and SV2C labeling in the hippocampus (H), olfactory bulb (BO) and striatum at P7. Five animals per age were observed in sagittal sections, 4 or 5 animals per age in coronal sections. Nuclei were counterstained with DAPI (blue). Original magnification 40X.