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Average CRF-positive pixels across 4 levels of the dorsal raphe nucleus in all groups expressed as percent of total area examined. From (Weissheimer et al., 2010). There was a significant effect of treatment (p=0.0496), but no effect of stress sensitivity (p=0.6755) and no interaction (p=0.3027). SS+CIT group exhibited significantly lower CRF fiber density compared to SS+placebo. Asterisk represents a significant difference (Bonferroni, p<0.05).
