Figure 8From: Single-prolonged stress induces apoptosis in dorsal raphe nucleus in the rat model of posttraumatic stress disorder The rates of the apoptosis cells were calculated by TEM at different time points in dorsal raphe nucleus (mean ± SEM). The apoptosis rate peaked at SPS 7d. P < 0.001 SPS vs. control group. Tukey’s test: ▲P < 0.05 SPS 1d vs. control group. ●P < 0.05 SPS 7d vs. SPS 1d. ■P < 0.05 SPS 14d vs. SPS 7d.Back to article page