KUMAMOTO UNIVERSITY IMAGE: ERΒ CONTROLS MUSCLE GROWTH IN YOUNG FEMALE MICE ERΒ IS ESSENTIAL FOR MUSCLE REGENERATION IN FEMALE MICE INACTIVATION OF ERΒ CAUSES AN INCREASE IN APOPTOSIS ERΒ IS REQUIRED FOR SATELLITE CELL POPULATION EXPANSION Researchers at Kumamoto University, Japan generated mice lacking the estrogen receptor beta (ERβ) gene, both fiber-specific and muscle stem cell-specific, which...