Fig. 6.

I₀ of three regions of interest. Values of I₀ in the cortex and basal ganglia (BG) are virtually identical among the three groups. In contrast, I₀ of cerebrospinal fluid (CSF) within the third ventricle is significantly higher in AQP-4-KO mice compared with AQP-1-KO and WT mice. I₀ of CSF within the third ventricle in AQP-1-KO mice is virtually identical to WT mice. *P<0.01 vs. WT, ^§P<0.01 vs. AQP-1 (−/−). AQP-1 (−/−), AQP-1-KO; AQP-4 (−/−), AQP-4-KO mice; KO, knockout; WT, wild-type.