to test the hypothesis that this spontaneous axonal loss represents a natural process whereby an excessive number of immature preganglionic axons in the cervical sympathetic trunk adapts to the neuronal population in the superior cervical ganglion , the number of nerve cells in the superior cervical ganglion was reduced in newborn rats by administration of nerve growth factor antiserum , 6-hydroxy-dopamine or postganglionic anxotomy .
C0004461
axons
C0027882
nerve cells