Figure 1

Schematic of hippocampus and presubiculum brain regions quantified. The figure shows two adjacent sections from one representative titi monkey brain. The section in (a) was stained using Nissl staining. The section in (b) underwent 125I-OVTA autoradiography to identify OXTR binding. (c,d) A zoomed in segment of (b) (the zoomed region is indicated by the black box). (c) The brain regions that were quantified, and (d) depicts the boundaries that were traced to quantify each brain region. 125I-OVTA 125I-ornithine vasotocin analog, CA1, CA2/3, CA4 CA fields of the hippocampus, DG dentate gyrus, Subic subiculum, PSB1 presubiculum layer 1, PSB3 presubiculum layer 3.