Influence of LPS on cell viability.

<p>U937 cell were exposed to 10 µg/mL of LPS for 24 h and cell viability was assessed by MTT assay. Results are expressed in percentage of control (mean ± SEM of five independent experiments, performed in triplicate). *p<0.05 vs control cells (0 µg/mL of LPS); **p<0.01 vs control cells.