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Fig. 3 | Journal of Nanobiotechnology

Fig. 3

From: Restorative biodegradable two-layered hybrid microneedles for melanoma photothermal/chemo co-therapy and wound healing

Fig. 3

A Dissolution of microneedles after application into porcine skin in vivo for 0 min, 15 min, 30 min, and 45 min. B The morphology of microneedles tips with resistance to different weights from 0 to 500 g. C Bright micrographs of puncture sites on the back skin of nude mice after insertion of MNs. D Trypan blue staining of the back skin of nude mice after MNs insertion. E H&E staining of microneedle-treated skin section

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Journal of Nanobiotechnology

ISSN: 1477-3155

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