For microsurgeons who reattach fingers, ears, and other extremities, leeches remain an invaluable medical device.
The universal donor, Type O, is always in short supply.
Getting one at a spa increases your risk of infection.
For centuries scientists have sought an artificial substitute for blood. Equipped with modern nanotechnology and a humbler strategy, bioengineers think...
There are so many better ways to spend your money.
Do you pass out when you get your blood drawn? You're not the only one.
There’s a lot more to blood type than A/B/O.
It might be a pretty important question.
Boiling blood and exploding skulls.
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