MC-21 antibody efficiently depletes circulating monocytes and MDMs in the brain. A, Numbers of circulating CCR2+ monocytes in sham-operated and stroke-subjected mice, injected with either vehicle or MC-21 antibody. Number of animals: Sham-vehicle, n = 9; MCAO-vehicle, n = 9; Day 4, n = 13; Day 7, n = 5; Day 10, n = 7; and Day 14, n = 8. Data are means ± SEMs; *p < 0.05, one-way ANOVA. B, Correlation graph showing CCR2+ circulating monocytes expressed as percentage of CD45high/CD11bhigh blood monocytes and MDMs expressed as percentage of all CD45+/CD11b+ macrophages in brains of stroke-subjected mice, injected with either vehicle or MC-21 antibody (n = 7). Correlation analysis, R2 = 0.90, p < 0.05.