Westfall, J A Ultrastructural evidence for a granule-containing sensory-motor-interneuron in Hydra littoralis. [electronic resource] - Journal of ultrastructure research Feb 1973 - 268-82 p. digital Publication Type: Journal Article ISSN: 0022-5320 Standard No.: 10.1016/s0022-5320(73)90055-5 doi Subjects--Topical Terms: AnimalsBiological EvolutionCell NucleolusCell NucleusCiliaCytoplasmic GranulesGolgi ApparatusHydra--cytologyMicroscopy, ElectronMicrotubulesMitochondriaMotor Neurons--cytologyNerve Net--cytologyNeuromuscular Junction--cytologyNeurons--cytologyRibosomesSynapses--cytologySynaptic Vesicles