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For many years, the placebo effect was considered to be no more than a nuisance variable that needed to be controlled in clinical trials. Only recently have researchers redefined it as the key to understanding the healing that arises from medical ritual, the context of treatment, the patient...

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Mis-regulation of genes that control cell proliferation and cell fate determination often contribute to cancer development. In C. elegans let-7 mutants, stem cells frequently fail to terminally differentiate, and instead elect to divide again, a hallmark of cancer [7]. In C. elegans, let-7 directly...