title: An electron-microscope study of subcellular fractions of Octopus brain.
mesh_terms: D000109:Acetylcholine / Q000032:analysis; D001681:Biological Assay; D001921:Brain / Q000166:cytology*; D008854:Microscopy, Electron; D008928:Mitochondria; D008974:Mollusca / Q000166:cytology*; D009411:Nerve Endings; D013569:Synapses
chemical_list: D000109:Acetylcholine