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The extraction of interstitial fluid (ISF) from skin using microneedles (MNs) has attracted growing interest in recent years due to its potential for minimally invasive diagnostics and biosensors. ISF collection by absorption into a hydrogel MN patch is a promising way that requires the materials to have outstanding swelling ability. Here, a gelatin methacryloyl (GelMA) patch is developed with an...
In article number 1905910, Wujin Sun, Ali Khademhosseini, and co‐workers develop a transdermal microneedle patch from gelatin methacryloyl for minimally invasive extraction of interstitial fluid. Metabolites and drugs can be efficiently extracted for timely and accurate analysis, making the patch a potential platform to facilitate clinical diagnosis.
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