Figure 4From: Central Administration of Lipopolysaccharide Induces Depressive-like Behavior in Vivo and Activates Brain Indoleamine 2,3 Dioxygenase In Murine Organotypic Hippocampal Slice CulturesTime course of cell death in OHSCs. The OHSCs were treated with PI at different time points after the start of culture. Red fluorescence indicates the dead-cell population using PI staining. Bars represent the mean ± SEM (n = 3 in each group). Bars labeled with different letters (a, b or c) are significantly different from each other at p < 0.05. Scale bar = 500 μm.Back to article page