This Week in PNAS

Scientists at the RIKEN Center for Developmental Biology have used metabolomics to measure internal body time. Performing blood metabolome analysis on mice, they were able to measure hundreds of clock-controlled metabolites in mouse plasma; using the scan, they found body time under various conditions, which included differences in genetic background, sex, age, and feeding patterns.

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Jay Shendure and his colleagues have developed a new method to more comprehensively identify human cell types, the NY Times reports.

Researchers in the UK and Japan have shown that infertility in mice with three sex chromosomes can be overcome, according to the Guardian.

China is embracing preimplantation genetic diagnosis, Nature News reports. 

In PLOS this week: host genetic factors associated with cervical neoplasia progression, population patterns for an ancient flowering rainforest plant, and more.