Fig. 1From: Microfluidic in vitro brain endothelial monolayer model to evaluate cell-penetrating peptidesSchematics of microfluidic device design and permeability assay. Schematic overview of microfluidic chip at top and side view (a) and the preparation procedures for brain endothelial monolayer model in the microfluidic device (b) were shown. c Represents fluorescence image after injecting dextran into the device and intensity profile for permeability quantificationBack to article page