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) of the PVP-CD increased by up to 39 °C. With the improved properties, the fabricated PVP-CD microneedles possessed much sharper needle tips and the patch had less cracks than those made from pure PVP. Pig skin application results suggested that the PVP-CD microneedle arrays were able to reliably pierce the stratum corneum of the skin while it was not achievable for the PVP microneedles with the same geometry. We anticipate that these PVP-CD complex microneedles are more suitable for vaccine and drug delivery because of their superior properties.
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Chen et al. (2014) studied this question.
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