A high aspect ratio SU-8 fabrication technique for hollow microneedles for transdermal drug delivery and blood extraction

[摘要]：Protein drugs, e. g. hormonal drugs, cannot be delivered orally to a patient as they get digested in the gastro-intestinal (GI) tract. Thus, it is imperative that these kinds of drugs are delivered transdermally through the skin. To provide for real-time

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