When you suck in a lung full of air some of the oxygen winds up being taken up into the blood. But if you take a big slug of air and shoot it directly into your blood (DO NOT DO THIS AT HOME) it has bad consequences. Scientists at Boston Children's Hospital have made tiny gas-filled microparticles that can be injected directly into the blood. Testing on animals these scientists were able to keep animals alive for 15 minutes without a single breath. The secret is that the particles are small and can be deformed so they don't wind up clogging the small capillaries in the body.
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