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To explore this phenomenon further, the researchers compared blood samples from organ recipients one year after their surgery. There were 61 patients who had undergone kidney transplants, 31 who got liver transplants, and 28 patients who underwent both a kidney and a liver transplant.
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A video recorded in 2016 by a polar bear wearing a GPS collar equipped with a videocamera. This bear lives on the sea ice of the Beaufort Sea.(Credit: USGS and Polar Bears International)