title: Retinal crystals and oral tanning agents.
mesh_terms: D016644:Canthaxanthin; D002338:Carotenoids / Q000009:adverse effects / Q000031:analogs & derivatives* / Q000378:metabolism; D003460:Crystallization; D006801:Humans; D012160:Retina / Q000378:metabolism*
chemical_list: D002338:Carotenoids; D016644:Canthaxanthin