FIGURE 4.

OXTR ligand binding in the anogenital area of neonatal prairie voles. Pseudo-color composites (OXTR in red, cresyl violet counterstain in gray) of (A) female neonatal prairie vole with 0 nM OXT competition and (B) male neonatal prairie vole with 0 nM OXT competition White arrows indicate areas where quantifications were measured. Females did not display robust OXTR signal visible to the naked eye in the vaginal canal, only on external anogenital tissue. Males, however, displayed OXTR signal on internal and external genital tissue. Quantifications for this study only measured external anogenital tissue.