(A) Schematic outline of the Tamoxifen (TM) administration used in the study and experimental design for testing the effect of YY1 deletion on Cardiotoxin (CTX) induced muscle regeneration process for control (Ctrl), Pax7CreERT2/+; YY1+/+ and inducible knock Out (YY1iKO), Pax7CreERT2/+; YY1f/f mice. 