This Week in PLoS

Columbia University scientists have used microarray analysis to study the effects of epigenetic influences and gene expression patterns on behavioral variability. Using genetically identical mice, their work, published in PLoS ONE this week, shows that variability in large-scale organization of gene expression levels in the hippocampus, rather than differences in the expression levels of specific genes, is associated with individual differences in behavior in the mice.

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Researchers suggest that genetic variations could influence the side effects people experience when using synthetic cannabinoids, the International Business Times reports.

An analysis has examined the makeup of researchers on Twitter and what they share, Nature News reports.

At Stat News, Jim Kozubek argues that the Broad Institute is pushing the boundary of what a nonprofit is.

In PNAS this week: gut microbes may affect honeybee weight, phenotype and gene expression changes in DiGeorge syndrome, and more.