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Ravindranath, V., Anandatheerthavarada, H. K., & Shankar, S. K. (1989). Xenobiotic metabolism in human brain — presence of cytochrome P-450 and associated mono-oxygenases. Brain Research, 496(1-2), 331–335. doi:10.1016/0006-8993(89)91083-4 
10.1016/0006-8993(89)91083-4