g) AFOG staining of heart sections from 60 dpci animals and Tg(hsp70l:LOXP-STOP-LOXP-pdk3b-T2A-mCherry) alone (control) or in combination with Tg(myl7:Cre-ERT2), all after tamoxifen and heat shock treatments); black dashed lines outline the scar area; scar area measured on the right (n = 4-5 ventricles of each genotype). 