Skip to main content
. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Biomaterials. 2011 Jun 17;32(28):6823–6831. doi: 10.1016/j.biomaterials.2011.05.061

Figure 4.

Figure 4

Effect of infusion flow rate on (a) infusion pressure and (b) pain score as a function of infusion volume. Microneedles were inserted into the skin at 750 μm and saline was infused at rates of T8 = 0.1 mL/min (◆), T2 = 0.3 mL/min (■), and T7 = 1 mL/min (□). Visual analog score (VAS) for pain was normalized relative to the pain caused by intradermal insertion of the hypodermic needle. Data are the average of 10 replicates expressed as mean ± SD.