A puff of air could deliver your next vaccine

Nobody likes needles, but they're necessary for delivering many vaccines and biologics into the body. But what if those could be puffed through the skin instead, with just a little pressure, like being hit in the arm with a foam toy? Today, scientists report steps toward making that a reality. Using powdered vaccines that don't require refrigeration and a system driven by compressed gas, their "MOF-Jet" could easily deliver therapeutics against cancer and other diseases in a relatively painless way.

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