This Week in Science

Feb 22, 2019

In Science this week, a multi-institute team reports new DNA- and RNA-like systems engineered using eight nucleotide building blocks — dubbed hachimoji — that form orthogonal pairs. According to the scientists, the synthetic systems meet the structural requirements needed to support Darwinian evolution and offer increased informational density over standard DNA.

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The Scan

Collins to Avoid 'Manels'

US National Institutes of Health Director Francis Collins says he will avoid male-only speaker panels.

Patient Dies Following Fecal Transplant

Two patients fell ill, and one subsequently died, following a fecal microbiome transplant that harbored multi-drug-resistant bacteria, according to the New York Times.

From Pigs to Monkeys

Technology Review reports that eGenesis is testing whether organs from genetically modified pigs can be transplanted into monkeys.