Fig. 1.

Effect of LPS on the viability of rat PMVECs examined by MTT assay. A The cell viability was measured after rat PMVECs were incubated with different concentrations of LPS (0, 0.01, 0.1, 1, 10, and 100 μg/ml) for 24 h. B The PMVECs were treated with 10 μg/ml of LPS for indicated durations, then the cell viability was measured by MTT assay. All results were presented as means ± SD of three independent experiments. ^*P < 0.05, ^**P < 0.01 vs the value of control group