Recent studies have shown that pigs could donate hearts and kidneys for people. But livers, which rely on enzymes specific to each species, are more difficult. Now comes a promising new approach: partly humanize the pig’s liver. Researchers at Ximerex in Omaha, Neb., infused human liver cells into fetal pigs and watched the cells produce human liver enzymes. But with no room in the pigs’ livers, the human cells ended up in the spleen. To solve this space problem, Ximerex is developing genetically modified pigs programmed to kill off 20 to 80 percent of their own liver cells. The next step will be to transfer the pigs’ immune cells to the patient to build up a tolerance of the hybrid organ. Working with the University of Nebraska, Ximerex hopes to begin human trials in 2005, says President William Beschorner.
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They show how intelligence and body plans are closely linked—and could unlock AI for robots.
Surgeons have successfully tested a pig’s kidney in a human patient
The test, in a brain-dead patient, was very short but represents a milestone in the long quest to use animal organs in human transplants.
Is everything in the world a little bit conscious?
The idea that consciousness is widespread is attractive to many for intellectual and, perhaps, also emotional
reasons. But can it be tested? Surprisingly, perhaps it can.
We reviewed three at-home covid tests. The results were mixed.
Over-the-counter coronavirus tests are finally available in the US. Some are more accurate and easier to use than others.
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