Scientists found a mechanical "tipping point" that makes groups of cells switch quickly from healthy to fibrotic states. Collagen fibers, cell spacing and crosslinking control this abrupt change and affect how far mechanical signals travel.
Photo by Bioscience Image Library by Fayette Reynolds, Unsplash
Scientists isolated and sequenced RNA from a woolly mammoth's frozen tissue. The material came from Siberian permafrost and is nearly 40,000 years old; the study shows RNA can survive for very long periods.
A study shows that a process called alternative splicing may help explain different lifespans among mammals.
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