![]() ![]() A similarly long tail might have stopped sauropods from toppling over, but how could a beast like M. sinocanadorum, managed to balance their exceptionally long necks continues to puzzle scientists. ( Paul Barrett/National History Museum)īut how sauropods, and especially M. sinocanadorum used to estimate their overall neck length. sinocanadorum to more complete fossils of other sauropods with intact necks, landing on a whopping 15 meters in length for M. ![]() To work out how far its neck stretched, the researchers compared the bones of M. sinocanadorum has been found so far: an incomplete skeleton consisting of three neck vertebrae, a rib, and a few skull bones. At this point, it's pure speculation as to why they evolved necks of this length." "It could have also been to do with sexual display or used for neck-butting contests between males fighting over mates and territory, similar to how giraffes behave today," says study author and paleobiologist Paul Barrett, of the UK National History Museum. Like the giraffes of the Jurassic, long necks might have benefited in multiple ways. Yet access to nutrition isn't the only primal need that drives evolution. sinocanadorum was hailed as the largest sauropod from Asia, and it retains the distinction of having one of the longest necks known for any sauropod species," Stony Brook University paleontologist Andrew Moore and colleagues write in their published paper.įeeding is the most obvious purpose neck of such proportion, providing added reach to reduce the need to lug a giant body around or perhaps to nibble at hard-to-reach material. sinocanadorum's neck stretched out a distance 15.1 meters (49 feet) – an "exceptional feat" of bizarre proportions made possible by their air-filled, honeycomb-like vertebrae. AGU is an international, nonprofit scientific association whose mission is to promote discovery in Earth and space science for the benefit of humanity. ![]() ![]() Revisiting the fossil and comparing its size and structure to other long-necked sauropods, a team of researchers estimates M. Credit: Hu et al.Mamenchisaurus sinocanadorum was unearthed from fossil beds in northwest China in 1987 and named in 1993. The hypoimmune pseudoislets survived and ameliorated diabetes in the mice without the need for treatment with immunosuppressants. Subscribe today and save an extra 5 with checkout code 'LOVE5'. The engineered pancreatic cells were aggregated into pseudoislets which were then transplanted into immunocompetent, allogeneic, diabetic humanized mice. The ultimate action-packed science and technology magazine bursting with exciting information about the universe. engineered allogeneic primary human pancreatic cells to lack MHC class I and II molecules, thereby hiding the cells from the recipient immune system. Allogeneic pancreatic islet transplantation has been used to improve glycemic control in patients with diabetes but can provoke inflammatory reactions as well as allo- and autoimmunity, necessitating lifelong use of immunosuppressants by recipients. The science section of this nearly 200-year-old British daily newspaper covers. Science Daily is an American website launched in 1995 that aggregates press releases and publishes lightly edited press releases (a practice called. The bottom and left pseudoislets were stained for major histocompatibility complex (MHC) class I (red), CD47 (yellow), and nuclei (blue). The ultimate action-packed science and technology magazine bursting with exciting information about the universe. The top and right pseudoislets were stained for somatostatin (blue), insulin (green), and glucagon (red). The cover shows wild-type (top and left) and engineered hypoimmune (bottom and right) pancreatic pseudoislets derived from primary human pancreatic islet cells. ONLINE COVER A Cloak for Pancreatic Pseudoislets. ![]()
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