This Week in Science

In Science Translational Medicine this week, investigators at Stanford University School of Medicine show that miR-21 "blocks abdominal aortic aneurysm development and nicotine-augmented expansion." Because of this, the authors suggest modulation of its expression "shows potential as a new therapeutic option to limit AAA [abdominal aortic aneurysm] expansion and vascular disease progression."

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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.