After 15 minutes, the majority of the tumor cells were killed.

The test is done after the tumor cells are removed from the body.

It may also be given to kill any tumor cells that have spread to other parts of the body.

Scientists are also looking beyond the tumor cells to their environments.

N1 and N13 were estimated to contain more than 5% tumor cells.

All those treated by the other means died within 23 days of receiving the tumor cells.

Many drugs work well at first against cancer, but the tumor cells quickly develop resistance.

"I was looking for the deadliest thing around to get those tumor cells."

A second surgery may be done to remove any remaining tumor cells.

More studies are looking at genetic signatures of tumor cells.