The Synergistic Effect of Iontophoresis or Electroporation and Microneedles on the Skin Permeation of High Molecular Weight Compounds
Fig. 24.1 Schematic illustration of microneedle array made by acupuncture needles. (a) Top view, (b) back view, (c) one needle. Each needle tapered over a 400-μm length to a sharp…