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Size‐dependent nanoparticle–BBB interactions. (a) Endothelium‐associated concentration of spherical polystyrene nanoparticles of different sizes after 2 hr under flow. (b) Basolateral transport flux of spherical polystyrene nanoparticles of different sizes through the μHuB monolayer. (c) Basolateral transport flux of spherical polystyrene nanoparticles of different sizes through the μHuB monolayer normalized by the magnitude of their endothelial association
