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Concept of oral nanotherapy using natural compounds for stroke treatment. (A) Chemical structures of curcumin, quercetin, and Panax notoginsenoside. (B) Orally administered nano-units containing natural products show lower degradation in the stomach, are absorbed in the bloodstream from the intestine, and are more efficiently delivered to the brain while preserving the active drug form. SLN, solid lipid nanoparticle. Color images available online at www.liebertpub.com/jmf
