Effect of CeO2/spherical silica and halloysite nanotubes engineered for targeted drug delivery system to treat breast cancer cells oleh Sarah Almofty, Vijaya Ravinayagam, Norah Alghamdi, Wejdan Alghamdi, Zainab Albazroun, Layan Almulla, Sultan Akhtar, Ali Awad Almofleh, Gazali Tanimu, H. Dafalla, B. Rabindran Jermy