(A) Luciferase-based quantification of MEF2 activity after Cand2 KD in NRCMs. Analysed by t-test, n=3 biological replicates. Data information: Error bars indicate means ± SEM; * - P ≤ 0.05, ** - P ≤ 0.01, *** - P ≤ 0.001, **** - P ≤ 0.0001 