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Science

Teen Takes On Donor's Immune System 231

Leibel writes "The Australian ABC News is reporting that a 15-year-old Australian liver transplant patient has defied modern medicine by taking on her donor's immune system. Demi-Lee Brennan had a liver transplant. Nine months later, doctors at Sydney's Westmead Children's Hospital were amazed to find the teenager's blood group had changed to the donor's blood type. They were even more surprised when they found the girl's immune system had almost totally been replaced by that of the donor, meaning she no longer had to take anti-rejection drugs. 'Dr. Michael Stormon says his team is now trying to identify how the phenomenon happened and whether it can be replicated. "That's probably easier said than done... I think it's a long shot," he said. "I think it's a unique system of events whereby this happened. "We postulate there's a number of different issues - the type of liver failure that she had, some of the drugs that we use early on to suppress the immune system and also that she suffered an infection with a virus called CMV, or cytomegalovirus, which can also suppress the immune system."'"
Math

Has the Higgs Boson Particle Field Been Hiding in Plain Sight? 163

sciencehabit writes with a link to the ScienceNow site, noting an article saying the Higgs boson may already have been found in previous observations of the known universe. A theorist at Michigan state is arguing that scientists may have already found evidence for the elusive particle. The key appears to be that the particles that make up the Higgs field are of various 'strengths', and some of those particles may tug on others very weakly. "The lightest Higgs can be very light indeed, but it would not have been seen at [CERN's Large Electron-Positron (LEP)], because LEP experimenters were looking for an energetic collision that made a Z that then spit out a Higgs. That wouldn't happen very often if the lightest Higgs and the Z hardly interact. 'Just within the simplest supersymmetric model, there's still room for Higgs that is missed,' Yuan says. However, this lightweight Higgs is not exactly the Higgs everyone is looking for, says Marcela Carena, a theorist at Fermilab. 'The Higgs they are talking about is not the one responsible for giving mass to the W and Z,' she says. It can't be because it hardly interacts with those particles, Carena says. Indeed, in Yuan's model, the role of mass-giver falls to one of the heavier Higgses, which is still heavier than the LEP limit, she notes."

Teleportation — Fact and Fiction 348

jcatcw writes "Earlier this week actor Hayden Christensen, of Star Wars fame, and director Doug Liman discussed teleportation with MIT professors to compare the reality to the special effects version in the upcoming movie, Jumper. Edward Farhi, director of the Center for Theoretical Physics at MIT, said, 'It's a little less exotic than what you see in the movie. Teleportation has been done, moving a single proton over two miles. [But] teleporting a person? That is pretty far down the line. The quantum state of a living creature is pretty formidable. That is just not in the foreseeable future.'"

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