autoradiographic analysis of the distribution of silver grains over nuclei in intact non-s-phase cells , and over isolated nuclei from hpc exposed to [ ( 3 ) h ] dcyd for 18-20 hr , showed that the vast majority of the radioactivity was incorporated into the nuclei themselves , and not into overlying cytoplasm or mitochondria .
C0010834
cytoplasm
C0026237
mitochondria