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Like Racecars, Cancer Cells Draft Their Way to New Tumor Sites
Building on the relatively new discovery that metastatic cancer cells leave tumors and travel in clusters, not singles, a Vanderbilt University team learned the process is aided by leader-follower behavior. Like racecar drivers, the front cell expends vastly more energy making its way forward through tissue to establish a new tumor site.
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Seeds Inherit Memories From Their Mothers
Seeds remain in a dormant, "sleeping" state as long as the environmental conditions are not ideal for germination. The depth of this "sleep" is influenced by the seed's mother. Researchers have shown how this maternal imprint is transmitted through "interfering" RNAs which inactivate certain genes.
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Removing "Zombie Fat Cells" a Way Forward for Treating Diabetes
A role for senescent fat cells in the development of diabetes has been demonstrated in a rodent study whereby the cells were selectively removed in different ways, resulting in improved glucose tolerance and enhanced insulin sensitivity.
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Peptide May Protect Kidneys From Ourselves
A synthetic peptide appears to directly disrupt the destructive inflammation that occurs in nephritis, enabling the kidneys to better recover and maintain their important functions.
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How Our Brain Perceives Time
What happens in our brain when we listen to the rhythmic pace of a song or when, at the traffic light, the light is red and we are nervously awaiting the green? How does our brain perceive time in these situations? For the first time in humans, an imaging study shows that time maps exist in a specific area of the brain, the supplementary motor area (SMA).
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Can You “Catch” Cancer?
Billions worldwide are infected with tropical worms. Unsurprisingly, most of these people live in poor countries, kept poor by the effects of worm-related malnourishment. What may surprise many is that worms also cause the majority of cases of some cancers in these countries.
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Post-stroke Recovery Dictated by Genetic Variants?
Our genes may have a bearing not only on our stroke risk, but probably also on how well we recover after stroke. For the first time scientists have identified common genetic variants that are associated with outcome after ischemic stroke.
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CRISPR-Chip Detects Mutations in Minutes
Researchers are the first to combine the power of CRISPR's nucleic acid targeting with the ultra sensitivity of graphene, making it possible to digitally detect DNA without amplification.
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Male Birth Control Pill Passes Human Safety Tests
A new male birth control pill passed tests of safety and tolerability when healthy men used it daily for a month, and it produced hormone responses consistent with effective contraception, according to researchers at two institutions testing the drug.
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Depression in Your Twenties Linked to Memory Loss in Later Life
A new large-scale longitudinal study has found a clear link between episodes of depression and anxiety experienced by adults in their twenties, thirties and forties, with a decrease in memory function by the time they are in their fifties.
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