BACKGROUND: During acute infarct myocardium repair process, it is important to seek mobilization agent that can elevate number of peripheral blood bone marrow mesenchymal stem cells (BMSCs) and induce BMSCs homing to damaged myocardium. OBJECTIVE: To explore the effect of active principle region of Yangxin Tongmai Formula (apr-YTF) on the BMSC mobilization and homing of infarct myocardium in rats. METHODS: The apr-YTF was primarily composed of ginsenoside, tanshinone IA, total alkaloids, and panaxan, which was supplied by College of Pharmacy, Central South University in accordance with the tec...