The effects of taurine and magnesium (Mg) supplementation on endothelial progenitor cell (EPC) colony formation in spontaneously hypertensive rats (SHRs). In the Control group, Wistar Kyoto (WKY) rats and SHRs (n=6) received a low-Mg (60 mg per 100 g) diet with high-salt drinking water (1% NaCl) for 4 weeks. In the Taurine group, SHRs (n=6) received a 3% taurine solution in 1% NaCl for 4 weeks. In the Mg group, SHRs (n=6) received a high-Mg (360 mg per 100 g) diet with 1% NaCl for 4 weeks. In the Taurine+Mg group, SHRs (n=6) received 3% taurine solution and a high-Mg diet with 1% NaCl for 4 weeks. Peripheral blood mononuclear cells were separated to quantify EPC colony formation. The data are expressed as the mean±s.e.m. *P<0.05 and **P<0.01 between the indicated columns.