Quantitative analysis of nuclear NF-κB p65 index in vascular ECs and in intravascular lymphocytes in the brains of control, NCM and CM groups. The graphs show NF-κB p65 expression in vascular ECs (A) and intravascular leukocytes (B) in three experimental groups. aSignificance of p < 0.001 compared with control brain (Mann–Whitney U test). bSignificance of p = 0.034 compared with NCM (Mann–Whitney U test). Data are presented as mean ± SEM.