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The ability to regrow their tails has been a documented and life-saving skill of small reptiles like lizards and geckos. Now, researchers say they have details of larger reptiles, alligators, regrowing their tail.A team of scientists from Arizona State University and the Louisiana Department of Wildlife and Fisheries were surprised to discover the alligators have the ability to regrow their tails up to 9 inches. Their report was recently published in Scientific Reports.“Overall, this study of wild-caught, juvenile American alligator tails identifies a distinct pattern of wound repair in mammals while exhibiting features in common with regeneration in lepidosaurs and amphibia,” the researchers concluded.The wild-caught alligators most likely lost their tails by traumatic injury, the scientists stated. The team also had samples of regrown tails from alligators who had died."The regrown skeleton was surrounded by connective tissue and skin but lacked any skeletal muscle (which lizard tails do regenerate with)," Kenro Kusumi, co-senior study author and professor and director of ASU's School of Life Sciences and associate dean in the College of Liberal Arts and Sciences, told CNN.Even without muscles, a regrown tail is important for alligators’ survival.The team hopes their research will help scientists working on regenerative therapies in humans. Although humans are incapable of regrowing a limb, researchers said we have the same cells and pathways that alligators and other animals use for regeneration. 1532

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Statsministeriet indkalder til pressem?de i dag kl. 16.00 om situationen med mink i forbindelse med COVID-19. Pressem?det finder sted i Eigtveds Pakhus. #dkpol pic.twitter.com/ssYpDZV52B— Regeringen (@regeringDK) November 4, 2020 237

Sudan, the world's last male northern white rhino, has died.For nearly a decade, Sudan lived in a 700-acre enclosure at the Ol Pejeta Conservancy, against the backdrop of the hulking Mount Kenya.Armed guards protected him 24 hours a day because he belonged to a subspecies on the verge of extinction from poachers. Rhinos are targeted by poachers fueled by the belief in Asia that the horns cure various ailments. 421

Tesla CEO Elon Musk said he may be willing to buy one of the plants General Motors is planning to close if the automaker is willing to sell the property to him."It's possible that we would be interested. If they were going to sell a plant or not use it that we would take it over," he said in an interview on "60 Minutes."GM announced late last month that it was planning to shut down five plants in North America next year including the Detroit Hamtramck assembly and Warren transmission plants.A plant in Lordstown, Ohio, is also scheduled to close.Tesle actually bought a plant jointly owned by General Motors and Toyota back in 2010 for million. It is now one of the company's main production facilities. 730

来源：资阳报