title: Developmental abnormalities of identifiable neurons in the crayfish Procambarus simulans.
abstract: We report anomalies of lateral giant neurons in field-caught animals. In one case, both lateral giant neurons arising from the fifth abdominal ganglion did not terminate in the next-most anterior ganglion, but rather continued to the third abdominal ganglion. In another case, an additional large neuron arising in the fifth abdominal ganglion coursed in a posterior direction. All othe CNS structures appeared normal in animals having either anomaly.
mesh_terms: D000818:Animals; D003400:Astacoidea / Q000033:anatomy & histology*; D002490:Central Nervous System / Q000033:anatomy & histology; D005724:Ganglia / Q000166:cytology; D009474:Neurons / Q000166:cytology*