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(A) Schematic illustration of mesoporous silica-coated gold nanorods (Au@SiO2) as a novel multifunctional theranostic platform for cancer treatment. TEM images of (B) AuNRs and (C) Au@SiO2; (D) extinction spectra of AuNRs, Au@SiO2, and Au@SiO2–DOX, and (E) DOX release profiles from Au@SiO2–DOX with and without near infrared (NIR) laser irradiation at different pH. Reproduced with permission from Ref184.
