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. 2016 Nov 15;8(4):33. doi: 10.3390/pharmaceutics8040033

Figure 2.

Figure 2

Microchannel visualization using Fast Green FCF on (A) untreated skin and (B) microneedle-treated skin; Alexa Fluor® 488 on (C) untreated skin and (D) microneedle-treated skin using 7.5× magnification.