arteries
Bad Cholesterol Isn't Actually Always Bad
But pinpointing the exact moment it turns against you can be surprisingly tricky.
How a Scientist on Earth Is Studying a Floating Astronaut’s Veins
Astronauts’ arteries undergo troubling changes in space. A Canadian scientist is trying to figure out why.
This Simulated Injury Spurts Blood for Science
Researchers are making virtual wounds to train future trauma surgeons.
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