1.   All these therapies are aimed at killing diseased cells without harming healthy cells.

2.   Cells from fetal organs hold promise when implanted to replace diseased cells in other bodies, some scientists believe.

3.   Corixa has focused on identifying antigens, the physical features that make it possible to target diseased cells.

4.   In addition, he said, bone marrow from a donor could help destroy diseased cells, an effect known as graft vs. leukemia.

5.   It also led to the creation of new drugs that kill only diseased cells instead of all cells, increasing efficiency and decreasing side effects.

6.   Monoclonal antibodies can seek out and destroy diseased cells.

7.   Most drugs are indiscriminate, killing healthy cells along with diseased cells.

8.   Monoclonal antibodies are proteins that that can find and attach themselves to specific diseased cell targets without harming healthy ones.

9.   Once the DNA chip is ready, the scientist would extract the active DNA from the diseased cell, and drop this genetic material onto the DNA chip.

10.   One approach is to screen T cells from patients with breast cancer, say, to find ones that have already targeted diseased cells.