Use of a PPT to ascertain female preference for males previously exposed to PO relative to CO. A, Schematic representation of the T-maze used for the PPT. Males were placed in the ends of arms confined by Plexiglas shields containing many holes. Use of a PPT to ascertain female preference for males previously exposed to PO relative to CO. A, Schematic representation of the T-maze used for the PPT. Males were placed in the ends of arms confined by Plexiglas shields containing many holes. B, C, Female rats spent less time in the vicinity of PO-exposed males relative to CO-exposed males during the last 4 min of a partner preference test, both 1 and 17 d after the odor exposure had occurred in males. The percentage of time spent with males was calculated as the percentage of time spent with either a CO or PO male per total time spent with both CO and PO males. Data are expressed as the mean ± SEM. *p ≤ 0.05, PO different from CO. Austin C. Korgan et al. eNeuro 2016;3:ENEURO.0231-16.2016 ©2016 by Society for Neuroscience