Fig. 8

Hippocampal and cortical microglia size and activation markers correlate differently during hypertensive stages. Correlation plots from hippocampal and cortical microglia in (a, e) young controls, (b, f) early hypertension, (c, g) older controls and (d, h) late hypertension. Statistically significant values (non-parametric Spearman’s test) are shown in their respective cells. The color of each cell represents an estimation of the positive (red) or negative (blue) correlation index based on the r value. Ctrl, Controls; HTN, Hypertension