PRKCD and Sepsis: The role of PKCδ in mediating human brain microvascular endothelial (HBMVEC) permeability, junctional protein expression, and leukocyte adhesion and migration was investigated in vitro using our novel BBB on-a-chip (B3C) microfluidic assay and in vivo in a rat model of sepsis induced by cecal ligation and puncture (CLP).