Science: Upsetting Dogma

For more than a decade, most scientists have accepted the "central dogma" of molecular biology without question. Stated simply, that dogma holds that the heredity information in living cells is always passed along in the same direction: from the "double helix" DNA molecule to the single-stranded messenger RNA molecule, which in turn directs the synthesis of protein—which is essential to all life. Since the end of May, however, investigators at three separate laboratories have stunned the scientific community by revealing that the central dogma is contradicted by the activities of cancer-producing viruses.

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