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. Author manuscript; available in PMC: 2015 Jan 21.
Published in final edited form as: Adv Pharmacol. 2014 Aug 23;71:25–44. doi: 10.1016/bs.apha.2014.06.009

Figure 4. P-glycoprotein (P-gp) at the Blood-Brain Barrier: the Greatest Molecular Challenge to CNS Drug Delivery.

Figure 4

Note the significant cross section of drugs and xenobiotics that are all substrates for P-gp.