Association of Cx36 with nectin-1+ adherens junctions at mossy fiber terminals in adult rat ventral hippocampus. (A) Low magnification overview of the distribution of nectin-1+ adherens junctions in the ventral hippocampus, showing immunofluorescence labelling of nectin-1 highly concentrated in the stratum lucidum (A1, arrows), where it is co-distributed with Cx36-puncta (A2, arrows) and ZnT3+ mossy fiber terminals in this region (A3, arrows). (B) Confocal magnification of a region in stratum lucidum similar to that in (A), showing the vast majority of Cx36-puncta overlapping with or immediately adjacent to nectin-1+ adherens junctions (B1, arrows) localized to ZnT3+ mossy fiber terminals (B2, arrows).