Fig. 2From: Blood–brain barrier and foetal-onset hydrocephalus, with a view on potential novel treatments beyond managing CSF flowBlood brain barrier in the developing human cerebral cortex. Telencephalon of premature newborns. Immunostaining shows the presence of GFAP (a, b) and aquaporin-4 (c, d) around brain microvessels as early as 23 weeks of gestation. bv blood vessels. Scale bars a, b 10 µm; c, d 30 µmBack to article page