This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Science, Indiana University biologist Michael Lynch and his colleagues peek at the base substitution mutation rate in Paramecium tetraurelia, a freshwater ciliate. From genome sequence data from seven so-called "mutation accumulation" lines, which had been started with individual cells and grown for thousands of generations, the team saw pronounced genome stability in P. tetraurelia.

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A fire at a Manchester hospital may have destroyed lab equipment and data, the Guardian reports.

Researchers in China have begun another trial using CRISPR/Cas9 approaches in cancer patients, according to the Wall Street Journal.

In Science this week: human DNA found in sediments from archeological sites lacking bones, and more.

The Chan Zuckerberg Initiative is investing in Cold Spring Harbor Laboratory's BioRxiv.