Quantitative analysis of the effects of chemical UL on NF
B-Ir cells in the MVN and IVN. Data are mean values (± SEM) of the number of NFκB-Ir cells in the MVN and IVN for rats that had chemical UL and observed at 4, 8 h, 1, 3, 7, and 15 days after the lesion. Data of all postoperative times were pooled in sham animals, and mean value is shown as a horizontal line and standard error of the mean (± SEM) as two dotted lines. According to Bonferroni's principle, P < 0.01 was considered significant. * P < 0.01 versus sham values.