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. 2019 Jul 9;12(7):dmm037994. doi: 10.1242/dmm.037994

Fig. 3.

Fig. 3.

CCh induces more pronounced effects in S81Lhomo compared to WT and S81Lhet RA-treated hiPSC-CMs. (A) Representative spontaneous APs at baseline (left) and upon 10 µmol l−1 CCh (right) in WT, S81Lhet and S81Lhomo RA-treated hiPSC-CMs. The slanted arrows near the APs in the presence of CCh indicate the last AP before cessation of spontaneous activity. (B) Average frequencies before and during application of CCh. CCh drastically reduces the spontaneous AP frequency of S81Lhomo hiPSC-CMs. WT, n=10; S81Lhet, n=9; S81Lhomo, n=14. **P<0.01 (two-way repeated measures ANOVA and post-hoc Bonferroni corrected pairwise comparison). (C) Proportion of WT, S81Lhet and S81Lhomo hiPSC-CMs that became quiescent upon application of CCh. WT, n=10; S81Lhet, n=9; S81Lhomo, n=14. **P<0.01 (chi-square test, followed by Bonferroni corrected pairwise comparisons). (D) Representative APs (1 Hz overdrive stimulation) before and after the application of CCh. (E) Average maximal diastolic potential (MDP) at baseline and upon CCh in WT, S81Lhet and S81Lhomo RA-treated hiPSC-CMs (1 Hz overdrive stimulation). WT, n=17; S81Lhet, n=10; S81Lhomo, n=13. Effect of CCh on MDP is significantly more pronounced in S81Lhomo hiPSC-CMs (P<0.05 interaction effect CCh×genotype; two-way ANOVA).