With results in from the first set of samples in its effort to create a protein-standard mixture, the Human Proteome Organization now faces the task of figuring out why some laboratories had trouble properly identifying the proteins.

The effort is the next step in HUPO’s initiative to create the protein-standard mixture, which began a year ago. In December, the organization sent out its first sample set of 20 proteins in equimolar amounts to 24 laboratories worldwide for analysis. The proteins were created by Invitrogen at a purity level of between 95 and 99 percent.

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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.