title: Novel organelle associations in photoreceptors of a serpulid polychaete worm.
abstract: Cerebral and branchial eyes of serpulid polychaetes have been studied by electron microscopy for the first time. In one species both eye types possess a novel ultrastructure. The receptor cells of the simple cerebral ocelli are rhabdomeric and display a close structural and functional relationship between ciliary rootlets and mitochondria. The receptors of the compound branchial eyes contain both a rhabdom and a stack of photosensitive ciliary membranes.
mesh_terms: D000818:Animals; D001921:Brain / Q000648:ultrastructure; D002462:Cell Membrane / Q000648:ultrastructure; D002923:Cilia / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D005123:Eye / Q000648:ultrastructure; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D010786:Photoreceptor Cells / Q000648:ultrastructure*; D011077:Polychaeta / Q000648:ultrastructure*