Titration of proliferating cells after PT. A) ‘Time-block’ Brdu injection protocol to titrate cell proliferation rate after PT. Brdu were administered through intraperitoneal (IP) injection in seven groups of mice (N=5 mice in each group) at beginning of days 1, 3, 5, 7, 9, 11, and 13 after PT for 2 consecutive days, and mice from each group were sacrificed one day after last injection. B) Representative Brdu-stained brain sections from mice at different times after PT. C) Summary of Brdu+ cell density presented as cell number per mm2 in the two regions with an area of 200 μm × 200 μm in the layers 2/3 of cortex. Region 1(R1) is located 0-200 μm from the edge of ischemic core, and Region 2 (R2) is located 200-400 μm from the edge of ischemic core (see the left panel of B3). D) Cumulative Brdu+ cell density. E) Summary of Brdu+ cell density in the contralateral side in the equivalent location of ischemic core. Brdu+ cells are uniformly distributed in the cortex. N=5 mice in each time point. *p<0.05, value on day 4 compared with other dates after ischemia and control using ANOVA test.
Li et al. BMC Neuroscience 2014 15:58 doi:10.1186/1471-2202-15-58