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Effect of 5-HT on cell shortening of cardiomyocytes isolated from right (RV) or left (LV) ventricle. Cells (n = 27 (RV or 54 (LV) were exposed to 5-HT (100 µM) for 24 h and cell shortening was subsequently analyzed as in Figure 1. Data are full ranges (whiskers) with median and 25 and 75% quartiles (boxes). One-way ANOVA with Student–Newman–Keuls post hoc analysis. Different letters indicate group differences with p < 0.05.
