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[00:01.00]BOB DOUGHTY:And this is Bob Doughty with Science in the News,a VOA Special English progrm about recent developments in science.
[00:10.58]Today,we tell of a discovery about blood vessels and cancer.
[00:16.43]We tell about a robot that eats food.And we tell why it is never too late to stop smoking.
[00:25.16]SARAH LONG:Scientists at the Johns Hopkings University cancer center in Baltimore,Maryland have discovered what may be a new weapon against cancer.
[00:37.25]They found forty-six genes that are active in the cells of blood vessels that supply blood to cancers.
[00:46.89]The genes are not active in any other blood vessel cells.
[00:52.90]Scientists led by Kenneth Kinzler and Bert Vogelstein made the discovery.
[00:59.93]They found that seven of the genes seem to help in the creation of new blood vessels to cancers.
[01:08.81]So,these genes may be necessary for a cancer to get more blood.
[01:15.24]Without more blood,the cancer cannot grow.
[01:20.30]BOB DOUGHTY:Scientists say they may be able to use these genes to develop new cancer treatments.
[01:28.17]One such treatment might use drugs to prevent these genes from working.
[01:34.85]That could prevent a cancer from forming new vessels to get the blood it needs.
[01:42.22]Another treatment might use poisons to destroy a protein produced by genes to make blood vessels.
[01:50.95]Scientists could attach the poison to a special antibody.
[01:56.61]It would search through the body to find only that protein that builds blood vessels to cancers.
[02:05.34]It would put the poison in the protein to destroy it.
[02:11.19]Only that protein would be destroyed.Healthy tissue would not be harmed.
[02:17.62]But the cancer would not get the blood it needs to grow.
