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Painless Laser Injection Could Replace Needle Jab

Painless microjet injections powered by laser could one day replace jabs from hypodermic needles in delivering annual flu shots, vaccines and other medications, according to researchers at Seoul National University in South Korea, who write about the design of their Er:YAG laser microjet transdermal device and how they tested it on guinea pigs in the 15 September issue of Optics Letters...

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