LPS-induced cytotoxicity in endothelial and smooth muscle cells. Confluent monolayers of BME, DMVE, or rat aortic smooth muscle (RASM) cells were treated with ehAst or LPS at the indicated concentrations, and endothelial cell cytotoxicity was assessed using the ethidium homodimer incorporation assay after 72 hours. Results are shown as the mean of duplicate samples.