Choroid plexus epithelial expression of <i>MDR</i> <i>1</i> P glycoprotein and multidrug resistance-associated protein contribute to the blood–cerebrospinal-fluid drug-permeability barrierV. Venkat Rao, David Piwnica‐Worms, Julie L. Dahlheimer et al.|Proceedings of the National Academy of Sciences|1999Cited by 529