Figure 10.

Anterogradely labeled POR inputs to CA1 of hippocampus. A, Tangential section through L4 of flatmounted cortex stained with an antibody against M2 (magenta). Green spot indicates injection site of AAV2/1.hSyn.EGFP in POR. B, Tangential section through flatmounted HPF. For flatmounting, the hippocampus was separated from the external capsule (ec) along the alveus (alv) and flipped backward (inset) so that the ventral side faced the pial surface and the dorsal pole (cross hairs) came to lie at the posterior edge of the section through the flatmounted left cortical hemisphere (inset). POR → CA1 axons (green) are most densely labeled at the dorsal pole and gradually fade away toward the ventral pole. DG, Dentrate gyrus; slm, stratum lacunosum moleculare; so, stratum oriens; sp, stratum pyramidale; sr, stratum radiale; Sub, subiculum; dHPF, dorsal HPF; vHPF, ventral HPF.