a dense plexus of labeled axons and axonal varicosities in rostral PER, especially in the fundus and the dorsal bank of the rhinal sulcus, involving dorsal area 35 and ventral area 36 (Figs. 7B, 11D). Collator note: the terminal field is mostly in layer III, with some extension in layer V. See Fig. 7B, Swanson Atlas Levels 33-34.

[…] labeling extended farther rostrally in this case (Fig. 7A) compared with MO (Fig. 4) and ventral VO (Fig. 6) cases. Collator note: strong-moderate label in both PERI and ECT, rostralmost. Terminals are intermingled with fibers of passage, and are distributed in layers III and V. See Fig. 7A, Swanson Atlas Levels 31-32.

At more caudal levels, labeling in PER decreased in density (Fig. 7C) and was absent caudally in PER (Fig. 7D). Collator note: weak terminal field in layer III, at this level. See Fig. 7C, Swanson Atlas Levels 35-36.

At more caudal levels, labeling in PER decreased in density (Fig. 7C) and was absent caudally in PER (Fig. 7D). Collator note: Swanson Atlas Levels 42-43.

The injection produced labeled axons and terminals rostrally in PER, but labeling was weak (Figs. 8A,B, 11E) or absent in the middle and caudal portions of PER (Fig. 8C–E). Collator note: weak-moderate label at best in the rostral PERI. The label is mostly in layers II-III, with very few terminals in V. See Fig. 8A-B, Swanson Atlas Levels 30-32.

The injection produced labeled axons and terminals rostrally in PER, but labeling was weak (Figs. 8A,B, 11E) or absent in the middle and caudal portions of PER (Fig. 8C–E). Collator note: no label in the caudal two thirds of the PERI. See Fig. 8C-E, Swanson Atlas Levels 35-43.

Collator note: weak-moderate field in the deep layers of the PERI, and moderate-strong in the dorsal part, extending into the ECT in this level. See Fig. 11F.