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Anesth Analg Mar;112(3): Epub 2010 Dec 14. The novel role of the mu opioid receptor in lung cancer progression: a laboratory investigation. Opioid Gene Variants Linked To Cancer Survival in Women ISSUE: December 2011Mounting laboratory and epidemiologic data have suggested a link between exposure to opioids during cancer surgery and metastasis of, and eventual death from, the disease. Now, a major genetics study has turned up some of the most compelling evidence yet for a connection between opioids and malignancy, even beyond the operating room. Direct effect of morphine on breast cancer cell function in vitro: role of the NET1 gene

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