81.   Glivec blocks a signal that protein sends out and effectively prevents the abnormal growth and production of other cancerous cells.

82.   Gleevec works by blocking chemical signals sent by cancerous cells and researchers hope it will also prove useful in treating stomach tumors and perhaps other cancers.

83.   Gleevec blocks a signal that the abnormal protein sends out, preventing the abnormal growth and production of other cancerous cells.

84.   Gleevec blocks a signal that the abnormal protein sends out, preventing the growth and production of other cancerous cells.

85.   However, he said he believes the vaccine technology can eventually be improved enough so the immune system only targets cancerous cells.

86.   Or it may act in some other way to kill cancerous cells, he added.

87.   Retired Anglican Archbishop Desmond Tutu had cancerous cells in the part of his prostate gland removed this week.

88.   The agent, called TRAIL, has been under investigation for use against many types of cancer because it causes cancerous cells to die.

89.   The particular antibodies that Press used are attracted to a receptor that is found only on cancerous cells, not healthy ones.

90.   There, he met doctors studying the behavior of cancerous cells.