81.   Tumor cells divide rapidly, burning energy in the process.

82.   Tumor cells simply begin to die.

83.   Tumors either shrank or the victims showed signs that tumor cells were dying.

84.   Tumor cells attacked by conventional chemotherapy drugs eventually mutate into resistant cells, thwarting the treatment.

85.   Using standard molecular techniques, his team succeeded in finding the gene and then showed that it is also missing in prostate, breast and kidney tumor cells.

86.   Using a powerful video camera that acts like a microscope, Ross then looks at the density of DNA within the tumor cells.

87.   What makes the cancer distinct is that in the tumor cells, parts of two chromosomes have switched places, somehow giving the tumor uncommon power to grow.

88.   With their added GM-CSF genes, the tumor cells sounded a biological alarm that recruited immune cells to fight the tumors.

89.   Would the revitalized tissues gain the endurance of germline cells or the lethal exuberance of tumor cells?

90.   Osteoprotegerin does nothing to the tumor cells, but cancels their effect on osteoclasts, he said.