monolayer cells of a harding-passey melanoma ( hpm 73 cells ) which were irradiated during the phase of exponential growth with an x-ray dose of 4 gy of 8 gy did not show any ultrastructural changes four days after 4 gy , whereas cells irradiated with 8 gy showed slight damages such as swollen mitochondria and vacuoles .
C0007634
cells
C0042219
vacuoles