This Week in Science

We've got microRNAs galore in today's edition of Science.

A paper from Rooij et al. at the University of Texas Southwestern Medical Center used a cardiac-specific microRNA to show that the MHC gene regulates heart growth and stress-related gene expression.

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A fire at a Manchester hospital may have destroyed lab equipment and data, the Guardian reports.

Researchers generate a genetic database from skeletal remains from the 1845 Franklin Expedition to the Arctic, Live Science reports.

Researchers in China have begun another trial using CRISPR/Cas9 approaches in cancer patients, according to the Wall Street Journal.

In Science this week: human DNA found in sediments from archeological sites lacking bones, and more.