So in two to three weeks, when you get the next course of therapy, you have a fitter pool of cancer cells floating around.

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Anastacia, who had the surgery on 10 February, will begin a six-week course of radiation therapy in the coming weeks.

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Bad news for the makers of sleeping pills: A new report in the prestigious Journal of the American Medical Association says that a six-week course of psychological therapy may be more effective for insomnia than taking drugs.

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The student asked this question very gently and non-threateningly, but her directness and the fact that she was an African American woman herself caused her question to rattle around my brain like a course of electric shock therapy.

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There was also an element of "therapy" about the style of the course, she said.

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Mr. ANDREW FIRE (Scientist, Stanford University Medical School): Of course, you know, therapy in monkeys is very useful, but in people it's going to be another question.

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More patients in the medical therapy group dropped out during the course of the trial.

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Their advanced age makes them far likelier to die from other causes, so the course of action typically recommended for them is watchful waiting or, sometimes, hormone therapy.

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Last month, for example, it criticised Bristol, one of the country's best-known universities, for an amateurishly administered postgraduate course in music therapy run jointly with a charity in Italy.

ECONOMIST: Universities