From an MIT Technology Review online article:
Researchers say they’ve successfully plunged human livers to subzero temperatures and then warmed them back up.
The “supercooled” organs were still in good shape after 27 hours, adding nearly a day to how long livers can last outside the body.
The supply of donor hearts, kidneys, and livers from accident victims is sharply limited. In the US, a nationwide system of registries and transplant centers coordinates to move them around by air in coolers for what are invariably emergency surgeries.
The research is part of a wider effort to learn how to keep organs operational outside the body for longer periods of time.
Researchers have identified how Salmonella ‘persister’ cells can spread antibiotic resistance genes in mice intestines. 
A blood test to detect the brain changes of early Alzheimer’s disease has moved one step closer to reality. Researchers from Washington University School of Medicine in St. Louis report that they can measure levels of the Alzheimer’s protein amyloid beta in the blood and use such levels to predict whether the protein has accumulated in the brain. The findings represent a key step toward a blood test to diagnose people on track to develop the devastating disease before symptoms arise.
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