11.   The retrovirus would infect only dividing cells.

12.   They took advantage of a special dye, called BrdU, that had been injected into late-stage cancer patients in order to label actively dividing cells.

13.   This test is good at detecting actively dividing cells.

14.   He said the next step is to identify the dividing cells and to find ways to target the damaged area of the heart for new cell growth.

15.   Standard cancer drugs indiscriminately kill dividing cells, causing nausea, hair loss, even death.