Enhanced efficacy of β-carotene loaded solid lipid nanoparticles optimized and developed via central composite design on breast cancer cell lines oleh Rajat Subhra Dutta, Gamal Osman Elhassan, Takhellambam Bidyapati Devi, Bedanta Bhattacharjee, Mohini Singh, Bani Kumar Jana, Supriya Sahu, Bhaskar Mazumder, Ram Kumar Sahu, Jiyauddin Khan