Fig 2CCopyright: Reprinted with permission from Elsevier from [doi:10.1006/dbio.1995.1099] Dev Biol 168: 514-28, Leonard L; Horton C; Maden M; Pizzey JA, Anteriorization of CRABP-I expression by retinoic acid in the developing mouse central nervous system and its relationship to teratogenesis. Copyright 1995