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On the trail of cell navigation
A computerized amoeba might help show the way.
- Space
New hints of saltwater on Mars
Seasonal patterns consistent with briny seeps on the Red Planet, a new study concludes.
- Life
How exercise benefits nerve cells
Activity stimulates production of a neural insulation that moves messages faster.
- Health & Medicine
Urine test may improve prostate screening
Levels of two biomarkers might clarify whether a man with an iffy PSA score needs to get a biopsy, a study finds.
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