Female gorillas must balance the reproductive costs of staying with or leaving an older male

When a gorilla group's silverback is close to the end of his reproductive years, females face a dilemma: Should they stay with him until he dies or leave him for another male? A team of researchers has now found that both strategies bear its costs: females face reproductive costs of staying with an older male as well as costs when they transfer to a new silverback.

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It takes a 'consortium': Researchers develop metabolic engineering technique

For years, scientists have explored ways to alter the cells of microorganisms in efforts to improve how many products are made, including medicines, fuels, and even beer. But altering the genetic and regulatory processes that take place within cells presents challenges. Now bioengineers is working with a team of researchers to engineer microbial consortia, wherein cell subpopulations are engineered to work together to carry out a desired function.

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Talking receptors may affect relaxin at work

A research team investigating the promising anti-fibrotic effects of a drug version of the hormone, relaxin, has discovered that the receptor through which it mediates its therapeutic actions can communicate and/or interact with other receptors in cells that contribute to fibrosis progression. This research may have implications for the design of clinical trials involving relaxin and its concomitant use with other drugs that act on these receptors.

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