The paddle-like mandibles of this leafcutter bee (Megachile sp.) lack cutting edges and are likely used to move mud around.
By The Scientist Staff | August 25, 2014
FLICKR, USGS, SAM DROEGE
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By Kate Yandell
Gut bacteria in mice spur regulatory B cells to differentiate and release an anti-inflammatory cytokine.
By Ashley P. Taylor
In mice, a transcriptional regulator, β-catenin, activates a microRNA-processing pathway in the nucleus accumbens to promote resilience to social stress.
By Bob Grant
Touch, The Altruistic Brain, Is Shame Necessary?, and Future Artic
View the January 2015 contents.
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