Tiny blood vessels in brain spit to survive

Spitting can be a good thing when it comes to blood vessels. Scientists at Northwestern University Feinberg School of Medicine have discovered capillaries have a unique method of expelling debris, such as blood clots, cholesterol or calcium plaque, that blocks the flow of essential nutrients to brain cells. The capillaries spit out the blockage by growing a membrane that envelopes the obstruction and then shoves it out of the blood vessel...

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