title: The question begs--what is the role of P-glycoprotein in normal physiology?
authors.affiliation: Cellular Cytotoxicity Laboratory, Austin Research Institute, Austin and Repatriation Medical Centre, Victoria, Australia.
authors.forename: R W
authors.initials: RW
authors.lastname: Johnstone
authors.forename: M J
authors.initials: MJ
authors.lastname: Smyth