Can a dirt-cheap drug fight cancer?

Each year billions of dollars are spent in the search to find new cancer drugs. Very few of these would-be treatments end up being approved by the government and entering widespread use, which makes it all the more intriguing that one of the most promising new cancer drugs in years is, in fact, an old drug.

Source: http://rss.cnn.com/~r/rss/cnn_health/~3/gMT66P0FUBc/index.html

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