Figure 6

LPS does not affect cell viability. Rat cortical astrocytes were cultured in DMEM containing 10% FCS. Confluent astrocytes were exposed to LPS (from 0.01 to 30 μg/mL), during 24 h. At the end, cells were incubated with MTT (A) or neutral red (B). Each value is the mean (± standard error) of at least 5 independent experiments performed in triplicate. Statistical analysis was performed by one way ANOVA.