Electron microscopic investigation of a giant neuron identified in the right parietal ganglion of Lymnaea stagnalis (L).
The ultrastructure of a giant neuron (GRP1) identified in the right parietal ganglion of Lymnaea stagnalis was examined. The results suggest that GRP1 is a neurosecretory cell. The perikaryon is characterized by many neurosecretory-like granules of variable electron density. The average diameter (longer axis) of the granules was 1850 A. Furthermore highly-developed rough endoplasmic reticulum and Golgi complex were observed in the cytoplasm. Synapse-like structures were often found on the somatic membrane, but typical, true synaptic endings were not seen.
D000818:Animals; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005724:Ganglia / Q000648:ultrastructure; D008195:Lymnaea / Q000648:ultrastructure*; D009474:Neurons / Q000648:ultrastructure*; D009489:Neurosecretion; D009685:Nuclear Envelope / Q000648:ultrastructure; D012621:Seasons; D013569:Synapses / Q000648:ultrastructure