Loss of Cdk5rap2 does not affect non-neural mESC differentiation into beating cardiomyocytes. (A) Scheme of assay to evaluate mESC differentiation into beating cardiomyocytes according to the validated embryonic stem cell test.24 (B) Normal cardiac differentiation was obtained for a Cdk5rap2 shRNAi mESC clone with strong Cdk5rap2 downregulation (sh1) as well as for control and scramble (n = 3 experiments, 24 wells each, one-way ANOVA, p = 0.1238, Bonferroni's Multiple Comparison Test, ns, not significant). Abbreviations: Co, control; scr, scramble; sh1–4, shRNAi clones 1–4; ns, not significant, *P < 0.05, **P < 0.01, ***P < 0.001.