This Week in PLOS

Researchers from São Paulo University have linked a microdeletion in chromosome 15 to obsessive-compulsive disorder, as they report in PLOS One this week. Using array-based comparative genomic hybridization in their pilot study of 16 patients with early onset OCD and 12 controls, the researchers uncovered a 64 kilobase deletion in chromosome 15q13.3 from one male patient with very early onset OCD.

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The US National Institutes of Health has developed guidelines to gauge whether frail chimpanzees are healthy enough to be moved to a retirement sanctuary.

Osamu Shimomura, who won the 2008 Nobel Prize in Chemistry for his work on green fluorescent protein, has died.

In PLOS this week: analytical approach for finding new genetic associations, analysis of Streptococcus pyogenes-infecting viruses, and more.

Stat News reports that the head of IBM Watson Health is leaving her post.