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Ancient DNA pulls back curtain on mysterious empire
  + stars: | 2024-04-27 | by ( Katie Hunt | ) edition.cnn.com   time to read: +6 min
Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. Analysis of ancient DNA recovered from human remains has illuminated the traits and ancestry of historic individuals — be it a mummified iceman, Chinese emperor or legendary composer. The origins of the empire and its people remained obscure until a landmark April 2022 study found they hailed from the Mongolian steppe. Carolyn Kaster/APNaturalists have spotted the first arrivals in this spring’s historic cicada dual emergence. Sign up here to receive in your inbox the next edition of Wonder Theory, brought to you by CNN Space and Science writers Ashley Strickland and Katie Hunt.
Persons: It’s, Loki, Gerald Eichstädt, Thomas Thomopoulos, , Scott Bolton, Bolton, George Mallory, Andrew Irvine, Mallory, Ruth, Carolyn Kaster, haven’t, you’re, , Ashley Strickland, Katie Hunt Organizations: CNN, of Archaeological Sciences, Eötvös Loránd University, Múzeum, NASA, Voyager, JPL, Caltech, Southwest Research Institute, Magdalene College , Cambridge, AP Naturalists, — Boeing, — Surgeons, Hubble, CNN Space, Science Locations: Rákóczifalva, Hungary, Central, Eastern Europe, Mount, United Kingdom, Macon , Georgia, South, Midwest
James is recovering well from the dual transplant last May and the donated eye looks remarkably healthy. Whatever happens next, James' surgery offers scientists an unprecedented window into how the human eye tries to heal. The hurdle is how to regrow the optic nerve, although animal studies are making strides, Goldberg added. James’ optic nerve clearly hasn't healed. Yet when light was flashed into the donated eye during an MRI, the scan recorded some sort of brain signaling.
Persons: Aaron James ’, James, ” James, there’s, , “ We’re, Eduardo Rodriguez, Rodriguez, James ’, Jeffrey Goldberg, Goldberg, ” Goldberg, Allie, , Meagan James, Vaidehi Dedania, Steven Galetta, David Klassen, “ we’re Organizations: — Surgeons, NYU Langone Health, NYU, Associated Press, Stanford University, United Network, Associated Press Health, Science Department, Howard Hughes Medical Institute’s Science, Educational Media Group, AP Locations: Springs , Arkansas, U.S
Two days later, the man was cracking jokes and able to sit in a chair, Maryland doctors said Friday. “You know, I just keep shaking my head – how am I talking to someone who has a pig heart?” Dr. Bartley Griffith, who performed the transplant, told The Associated Press. “It’s just an amazing feeling to see this pig heart work in a human,” said Dr. Muhammad Mohiuddin, the Maryland team’s xenotransplantation expert. That FDA allowed this second case “suggests that the agency is not ready to permit a pig heart clinical trial to start,” Mashke added. The pig heart, provided by Blacksburg, Virginia-based Revivicor, has 10 genetic modifications – knocking out some pig genes and adding some human ones to make it more acceptable to the human immune system.
Persons: , , ” Lawrence Faucette, Dr, Bartley Griffith, David Bennett, Ann Faucette, , Faucette, “ It’s, Muhammad Mohiuddin, Karen Maschke, ” Mashke Organizations: WASHINGTON, — Surgeons, Navy, University of Maryland Medicine, Associated Press, Maryland, Food and Drug Administration, FDA, National Institutes of Health, Maryland team’s, Hastings Center, Associated Press Health, Science Department, Howard Hughes Medical Institute’s Department of Science Education, AP Locations: Maryland, Frederick , Maryland, U.S, Blacksburg , Virginia
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