Fig. 2

Effects of homocysteine on cell viability in cultured human coronary artery endothelial cells (HCAECs). Cells were treated with the PBS control, 100 μmol/L cysteine, 100 μmol/L homocysteine, or 50 μg/mL L5 low-density lipoprotein (LDL) for 0, 24, and 48 h as indicated, and cell viability was assessed by an MTT assay. Values are the mean±SEM (n = 3). * p < 0.05 vs. the PBS control (the first black column). NS, not significant