a study of the changes in the ribonuclease activity of nuclei and mitochondria of rat brain cells following 1 , 3 , 7 , 20 and 90 days after extirpation of the right superior cervical ganglion showed an increase of enzyme activity in nuclei from the first up to the 90-th day following removal of the ganglion .
C0026237
mitochondria
C0007634
cells