title: Identification of a second type of catecholaminergic neuron in the spinal cord of the axolotl salamander.
abstract: Two distinct groups of catecholaminergic neurons were observed by histofluorescence techniques in the spinal cord of the axolotl salamander, only one of which was detected in normal intact cords. These neurons were located in the ventral ependymal zone. When the spinal cord was transected, a second group of catecholaminergic neurons was observed in the lateral portions of the ventral gray matter of the spinal cord caudal to the transection site. These observations suggest that the amount of catecholamine in the somata of the second group of neurons is normally very small and that catecholamines accumulate in the perikarya after transection of their ascending axons.
mesh_terms: D000557:Ambystoma / Q000033:anatomy & histology* / Q000502:physiology; D000818:Animals; D002395:Catecholamines / Q000502:physiology*; D005260:Female; D005453:Fluorescence; D009474:Neurons / Q000145:classification* / Q000502:physiology; D013116:Spinal Cord / Q000166:cytology* / Q000502:physiology
chemical_list: D002395:Catecholamines