chinese hamster cells in vitro subjected to tritium disintegrations at -196 degrees c from incorporated tritiated uridine were more sensitive to decays occurring in the nucleus ( do = 1,610 decays/cell , equivalent to approximately 3.0 gy to the nucleus ) than to those occurring over the whole cell ( do = 3,240 decays/cell ) .
C0007610
nucleus
C0007634
cell