A vitamin A analog that inhibits cell proliferation. 13-cis-Retinoic acid has been used: · as a component of fresh media for LA-N-5 differentiation · to treat medulloblastoma cells for cell differentiation · to treat spheroids for generating time-lapse videos · to examine its head- deforming activity under light and dark conditions in Xenopus laevis A vitamin A analog that inhibits cell proliferation. 13-cis-Retinoic acid has been used: · as a component of fresh media for LA-N-5 differentiation · to treat medulloblastoma cells for cell differentiation · to treat spheroids for generating time-lapse videos · to examine its head- deforming activity under light and dark conditions in Xenopus laevis