Figure 5.

Schematic illustration of the axonal projections and target areas of four CB-negative VCA1 pyramidal cells (A64 red, A60 orange, A32 green, A73 blue same color code as in Figure 2). The main axons of these cells branch in stratum oriens into three different routes: (route 1) via the fimbria/fornix system axons innervate septal nuclei and branches are reaching anterior olfactory regions (A64, A32) or (A60) turn ventrally to innervate the lateral hypothalamus. Axons of route 2 perforate the alveus and project to the amygdalar complex, amygdalohippocampal transition area or the entorhinal cortex. Branches of route 3 cross the ventral subiculum caudally from the soma to different subregions of the entorhinal cortex. (See abbreviation list).