This Week in PNAS

In this week's PNAS Early Edition, researchers led by Pradeep Singh at the University of Washington write that sampling procedures can affect the accuracy of microbiome studies. They compared lung, throat, and sputum samples taken from patients with cystic fibrosis undergoing lung transplants.

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What happens to scientific papers when certain journals are no longer published? Some scientists are trying to make sure they don't disappear forever.

A study in Microbiome finds that heavy drinkers have an unhealthy mix of bacteria in their mouths.

Doctors and patients are still trying to figure out what role at-home genetic testing should play in healthcare, Newsweek says.

In Genome Research this week, mismatch repair deficiency in C. elegans, retracing transcriptions start site evolution in the human genome, and more.