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. Author manuscript; available in PMC: 2013 Dec 6.
Published in final edited form as: Toxicol In Vitro. 2007 Apr 27;21(8):10.1016/j.tiv.2007.04.003. doi: 10.1016/j.tiv.2007.04.003

Figure 6.

Figure 6

Effects of apical exposure to PNP (176 μg/mL, 20 nm positively and negatively charged and 100 nm negatively charged) on Rt of RAECM (n = 10–13 for each concentration). Rt of all monolayers prior to apical exposure to PNP (at t = 0) was 3.58 ± 0.11 KΩcm2 (n = 47). These three types of PNP, as well as positively charged 120 nm PNP (data not shown), did not cause significant changes in Rt or Ieq (data not shown).