Endocardial capillary density 4 weeks post-MI in WT mice (n = 5) and EphA2-R-M mice (n = 3) was 32 ± 2 vessels per 400x high power field and 15 ± 1 vessels per 400x high power field, respectively (p < 0.01). The gene discussed is EPHA2; the disease is myocardial infarction.