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"New leukemia treatment exceeds 'wildest expectations'"
.... In the Penn experiment, the researchers removed certain types of white blood cells that the body uses to fight disease from the patients. Using a modified, harmless version of HIV, the virus that causes AIDS, they inserted a series of genes into the white blood cells. These were designed to make to cells target and kill the cancer cells. After growing a large batch of the genetically engineered white blood cells, the doctors injected them back into the patients. ....
http://www.msnbc.msn.com/id/44090512/ns/health-cancer/#.TkwblWEy5po
