Beta-caryophyllene inhibits the permeability of the blood¿brain barrier in MPTP-induced parkinsonism A.R. Ramos-Molina; A.R. Tejeda-Martínez; J.M. Viveros-Paredes; V. Chaparro-Huerta; M.F. Urmeneta-Ortíz; L.J. Ramírez-Jirano; M.E. Flores-Soto;