Scattered PHA-L-positive fibers enter layers II and III of parasubiculum (subdivision a) from the injection site situated in the medial sector of layer I1 (Fig. 3a,b). The shape and the orientation of these fibers indicate that they terminate within this area.

At levels ventral to the PHA-L injection a far denser [than the dorsal one…] terminal field is present that expands into subdivision b of the parasubiculum (Fig. 3b).

Collator note: very few terminals across layers, dorso-ventrally.

A small projection leaves the injection site and runs to innervate the lateral sector of the parasubiculum (subdivision a) (Fig. 5a-d). Some of the PHA-L-stained fibers apparently terminate here, while a small number of fibers enter the molecular layer, which they follow en route to the Ammon’s horn.

while relatively sparse [the medial projection], innervates all layers of the para- and presubiculum, but a dominating component of the projection runs in the outer one-third of the molecular layer (Fig. 9A-D).