The growth curve and multiple time point evaluation further showed that Hnrnpa1 overexpression increased the proliferative rate of P7 CMs starting from 32 h post Adv‐Hnrnpa1 infection and became stable thereafter 80 h post Adv‐Hnrnpa1 infection, indicating that Hnrnpa1 overexpression induced the extent of increase in CM number (Figure S5A,B, Supporting Information). This evidence concerns the gene HNRNPA1 and infection.