There was no difference in the concentration of CXCL12 in bone marrow aspirates of sham and myocardial infarction groups (Fig. 1F); however, in the myocardial infarction group, plasma levels of CXCL12 were significantly increased on day 5 after injury (Fig. 1E). The gene discussed is CXCL12; the disease is myocardial infarction.