The more a drug is touted as a cure for cancer, the more likely it is to be an example of fraud or quackery. But a few drugs do slow or even halt, for varying periods, the course of some kinds of cancer. The manufacturers of these products firmly specify that they have no cure; they do not want to raise false hope. And even among the most useful of cancer palliative drugs, most are not available for general prescription by all doctors; they are limited to ''investigational'' use by research physicians.
Such a...
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