title: The recognition, distribution and ultrastructure of hydrozoan nerve elements.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000032:analysis* / Q000166:cytology; D003594:Cytoplasmic Granules; D008854:Microscopy, Electron; D008928:Mitochondria; D009474:Neurons / Q000166:cytology; D013569:Synapses; D009435:Synaptic Transmission