Rosetta Genomics this week announced the publication of data by company researchers showing that downregulation of microRNA-150 is correlated to atrial fibrillation (AF) in patients with chronic systolic heart failure.

The report, which appeared the American Journal of Cardiology, demonstrated that the miRNA's expression was 3.2-fold lower in the platelets and serum of heart failure patients with AF compared with those patients without the arrhythmia.

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Two new Reproducibility Project: Cancer Biology studies have largely reproduced the original findings, ScienceInsider reports.

DNA fingerprinting could catch some sample mix-ups at pathology labs, the New York Times says.

A Maryland police department has turned to DNA phenotyping to develop a suspect sketch, WJLA reports.

In Cell this week: DNA methylation and T cell exhaustion, longevity in C. elegans, and more.