This Week in PNAS

In an early, online Proceedings of the National Academy of Sciences paper, a team from the UK and Spain describes transcriptional, translational, and post-translational modifications contributing to snake venom variability. By bringing together information on snake venom proteomes, snake genomes, and transcriptomes for six poisonous snake species, the researchers found that gene sequences alone are not the only venom composition determinants.

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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.