Dissolving Microneedle Patch (IMAGE) Elsevier Caption The microneedle patch can dissolve in the skin, delivering the flu vaccine painlessly. Credit (Image courtesy of Prof. Shinsaku Nakagawa) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.