Fig. 4
ETA receptor overexpression reduces overall cell viability in 661W cells. a Quantitative analysis of MTT assay absorbance readings at 490 nm for empty vector and ETA receptor vector stable clones following 24 h treatment with either 100 nM ET-1 or ET-3. b Graph of interpolated cell counts generated from a standard curve and experimental absorbance readings. Bars represent mean ± SEM (n = 20). Asterisks indicated statistical significance *p < 0.05 by one-way ANOVA and Tukey’s post hoc test