Figure 2.
Endothelial cell proliferation during EAE. A. Dual IF for CD31 (Alexa Fluor-488, green) and Ki67 (Cy3, red) was performed on frozen sections of EAE cervical spinal cord taken from 0, 4, 7, 14, and 21 days post-immunization. Scale bar =100 μm. Note that control tissue contains no Ki67+ cells, but these gradually increase with development of EAE, reaching a peak after 14 days. B. CD31/Ki67 dual IF high power images from the 7 and 14 day time-points, showing endothelial cell proliferation within remodeling blood vessels (see arrows). Scale bar = 25 μm. C. Quantification of endothelial cell proliferation during EAE development. Data points represent the mean ± SEM of 3 experiments. Note that endothelial cell proliferation peaks at 14 days post-immunization, then declines. * P<0.05, *** p < 0.01.
