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Cancer-causing human papillomaviruses diverged from their most recent common ancestors approximately half a million years ago, roughly coinciding with the timing of the split between archaic Neanderthals and modern Homo sapiens, according to a study published November 1 in the open-access journal PLOS Pathogens by Zigui Chen of the Chinese University of Hong Kong, Robert Burk of the Albert Einstein College of Medicine, and colleagues.
The researchers found that Rad9, previously considered a "watchman" that checks for DNA damage, is actually a "repairman" that fixes dangerous breaks in the DNA double helix. They found Rad9 is especially active in telomeres, the protective ends of chromosomes.
A Swedish research team partly consisting of researchers from Uppsala University followed a group of prostate cancer patients in the Nordic region for 15 years. The study found, among other things, that surgery reduces the risk that men with prostate cancer (even those with low-risk tumours) will die within 15 years. The results were published today in the New England Journal of Medicine.
In the midst of President Obama's push for health care reform, the Senate rejected a plan to allow American pharmacies and drug wholesalers to import federally approved drugs from abroad. That vote has proved to be a headache for customer service staff at companies like Canadameds.com (http://www.Canadameds.com), which sells low-cost prescription drugs directly to American consumers.
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