English, asked by sangaraeswariR, 6 months ago

why did greg chemical and radiation therapy?

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Answered by komalatejasri

Answer:

Medicine has used radiation therapy as a treatment for cancer for more than 100 years, with its earliest roots traced from the discovery of X-rays in 1895 by Wilhelm Röntgen. Emil Grubbe of Chicago was possibly the first American physician to use X-rays to treat cancer, beginning in 1896.

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