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In work out of Dave Bartel's MIT lab, researchers found that even though RNAi has not been conserved in the model budding yeast, Saccharomyces cerevisiae, it is present in other species, including S. castellii and Candida albicans. These two species use "noncanonical" Dicer proteins to make small interfering RNAs that mostly correspond to transposable elements and Y' subtelomeric repeats, they say, and when they introduced Dicer and Argonaute of S. castellii into S.

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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.

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

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

In Science this week: almond reference genome, and more.