title: On the fine structure of the Octopus iris.
mesh_terms: D000818:Animals; D002856:Chromatophores; D003094:Collagen; D004847:Epithelial Cells; D005110:Extracellular Space; D005347:Fibroblasts / Q000166:cytology; D007498:Iris / Q000166:cytology*; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009132:Muscles / Q000166:cytology / Q000294:innervation; D009411:Nerve Endings / Q000166:cytology; D009469:Neuromuscular Junction / Q000166:cytology; D049831:Octopodiformes / Q000033:anatomy & histology*; D010860:Pigments, Biological; D012508:Sarcolemma; D013569:Synapses / Q000166:cytology; D009435:Synaptic Transmission; D013572:Synaptic Vesicles
chemical_list: D010860:Pigments, Biological; D003094:Collagen