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. Author manuscript; available in PMC: 2020 Jul 15.
Published in final edited form as: Toxicol Appl Pharmacol. 2019 May 9;375:5–16. doi: 10.1016/j.taap.2019.05.007

Fig. 4.

Fig. 4.

Characterization of the RPTEC/TERT1, HRTPT and HREC24T cell lines. (A-C). Light level microscopy showing the morphology of the (A) RPTEC/TERT1, (B) HRTPT and (C) HREC24T cells at confluency. Arrows indicate the presence of domes, which are indicative of vectorial active transport. (D) Transepithelial electrical resistance (TER) measurements of the RPTEC/TERT1, HRTPT and HREC24T cells. Resistance is expressed as Ohms-cm2. (E-G) Growth rates of the (E) RPTEC/TERT1, (F) HRTPT and (G) HREC24T cells. Doubling times are indicated at the lower right corner of the graph. **** indicates significantly different at a p-value of ≤ 0.0001. Analysis was done in triplicates and plotted as the mean ±SD.