This Week in PNAS

In this week's PNAS Early Edition, researchers at Tufts University School of Medicine, along with their colleague at Harvard Medical School, show that "minimization of the Legionella pneumophila genome reveals chromosomal regions involved in host range expansion." By screening for genes necessary for optimal growth in nutrient-rich medium, the team found that the "L.

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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.