1. PMID 195192822. PMID 92506603. Reactome: R-HSA-211874 "CYP2S1 4-hydroxylates atRA"
4. Reactome: R-HSA-211923 "CYP26C1 4-hydroxylates 9cRA"
5. Reactome: R-HSA-212007 "CYP26A1,B1 4-hydroxylate atRA"
6. Reactome: R-HSA-5362525 "CYP26A1,B1,C1 4-hydroxylate atRA"
7. Reactome: R-HSA-5602050 "Defective CYP26C1 does not 4-hydroxylate 9cRA"
8. Reactome: R-HSA-5602063 "Defective CYP26B1 does not 4-hydroxylate atRA"