title: Ultrastructural study of the cutaneous pigment cells of wild-type and albinistic bullfrogs, Rana catesbeiana.
mesh_terms: D000417:Albinism / Q000473:pathology*; D000818:Animals; D001001:Anura; D002856:Chromatophores / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004817:Epidermis / Q000648:ultrastructure; D008544:Melanocytes / Q000648:ultrastructure*; D008547:Melanophores / Q000648:ultrastructure; D011892:Rana catesbeiana; D012867:Skin / Q000648:ultrastructure*