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Dissolvable microneedle patch for simplified vaccination. (a) An array of microneedles containing pink dye to simulate vaccine. A microneedle patch (b) showing the microneedle array, adhesive backing, and non-adhesive tab for handling. (c) A microneedle patch being applied to the skin. Images courtesy of (a) Devin McAllister, Georgia Tech, (b) Christopher Moore, Georgia Tech, and (c) Rob Felt, Georgia Tech.
