Fig4B. [doi:10.1002/dvdy.20253] Copyright: This image is from Furushima K; Murata T; Kiyonari H; Aizawa S, "Characterization of Opr deficiency in mouse brain: Subtle defects in dorsomedial telencephalon and medioventral forebrain." Dev Dyn 2005; 232: 1056-61. Reprinted with permission of Wiley-Liss Inc. [PMID:15736266]