Fig4H. from [PMID:8621625] J Biol Chem 271: 9526-9534, Ang HL; Deltour L; Hayamizu TF; Zgombic-Knight M; Duester G, Retinoic acid synthesis in mouse embryos during gastrulation and craniofacial development linked to class IV alcohol dehydrogenase gene expression. Copyright 1996