At levels immediately posterior to the posterior cortical amygdaloid nucleus (Fig. 2, sections A-D, and Fig. 3, A-D), label is detected over the full extent of the piriform lobe covering all areas from the medial bank of the rhinal sulcus to the subicular cortices of the hippocampal formation. In all of these cases, label is detected over axons immediately beneath the pia in the superficially located sublayer IA. Collator note: continuous label of the ENTl, TR, and ENTmv-ventrally. See Fig. 2A-D, Swanson Atlas Levels 37-40.

At more posterior levels through the piriform lobe (Fig. 2, sections E-L, and Fig. 3, E-F) the medial extent of label is truncated and does not extend to the subicular cortices. Collator note: only the caudal part of the ENTl, layer I is labeled continuously. The label stops abruptly at the border with ENTm, and laterodorsally, with ECT. See Fig. 2E-L, Swanson Atlas Levels 41-45.