Exploring Label-Free Imaging Techniques with Copper Sulfide Microspheres for Observing Breast Cancer Cells oleh Lutvi Vitria Kadarwati, I-Hsin Lin, Yu-Shan Huang, Yu-Yang Lee, Shin-Cyuan Chen, Chia-Lin Chung, I-Jan Chen, Jia-Yeh Wang, Sibidou Yougbaré, Tsai-Mu Cheng, Tsung-Rong Kuo