[…] massive network of axons that innervates the entire width of layer II, with a slightly sparser innervation of its central as compared to its superficial and deep parts (Fig. 3 a-d).

The ascending fibers form a relatively dense network of preterminal processes within layer II, and as the fibers reach the molecular layer they assemble to form a massive array of fibers and terminals (Fig. 4a-d).

The deeper layers (IV-VI) of the MEA are sparsely innervated by axons from the cells in layer III.

dense terminal fields in both layer II and layer III (Figs. 5a-d, 8E)[…]

dense terminal fields in both layer II and layer III (Figs. 5a-d, 8E)[…]

layer I is dominated by fibers running tangential to the pia surface along the longitudinal axis of the MEA (Figs. 5, 8D). These axons are intermixed with obliquely oriented fibers en route to the LEA as well as to extra-entorhinal structures (Fig. 8C). Collator note: several terminals clearly seen.

At the level of the injection site, a dense network of PHA-L-positive fibers is present throughout all layers (I-VI) of the MEA (Fig. 6a-d). This innervation is present at all levels ventral to the injection site and the innervation is densest in layers I1 and 111 (Figs. 6a-d, 8A).

Collator note: very strong terminal field in the ENTm, dorsoventrally, tending towards ENTl, layers V-VI. See Fig. 10C.