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. 2015 Sep 28;7(4):379–396. doi: 10.3390/pharmaceutics7040379

Figure 4.

Figure 4

In vitro transdermal permeation of passive and microneedle-facilitated amantadine hydrochloride after microneedle roller application across porcine ear skin (500 μm length, 540 needles per square centimeter density).