Fig. 2.

Comparison by qPCR. A) Summary of qPCR data for myofilament expression. The relative abundance was ranked from lowest to highest expression (+, ++, +++) in neonatal mouse, adult mouse and adult zebrafish (ZF) hearts. The absence of expression or very low levels was denoted by (−). Details are shown in Supplementary Figure 4. B) Measurements of cardiac miRNAs in the postnatal (day 0, day 4, day 14) and adult mouse heart and the adult ZF heart. Expression relative to internal control. Comparisons of gene expression to day 0 (D0) were performed using Student's t-tests. * denotes p ≤ 0.05; ** p ≤ 0.01; *** p ≤ 0.001.