somitogenesis retinoic acid receptor signaling pathway obsolete retinoic acid receptor signaling pathway involved in somitogenesis true This term was obsoleted because it represents a pre-composed term that should be annotated as a GO-CAM model. biological_process GO:0090242 tb OBSOLETE. The series of molecular signals generated as a consequence of a retinoic acid receptor binding to one of its physiological ligands that contributes to somitogenesis. retinoic acid receptor signalling pathway involved in somitogenesis 2010-01-22T10:42:54Z