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Guardian of the brain: the blood-brain barrier

Insights into the brain’s unique protective barrier could offer promising treatments for diseases such as multiple sclerosis and Alzheimer’s.

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How to understand a COVID-19 test result

A negative result from a medical test means you definitely don’t have the condition, right? Wrong: it depends on the false negative rate of…

       

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Elements in focus: molybdenum

From samurai swords to healthy tomato plants, this little-known element has wider uses than you might…

       


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