“…Rat brain microvascular endothelial cells (BMECs) were separated and cultivated to establish BBB model in vitro as previous reports 10 , 23 , 24 . BMECs were plated on fibronectin-coated 0.4 μm pore size Transwell Plates (24 mm Transwell®, Beijing Labgic Technology Co., Ltd., Beijing, China), at a density of 1 × 10 5 cells per well, and continuous growth for 2 weeks to allow the BMECs to form a monolayer.…”