In Vitro Tracking of Human Umbilical Vein Endothelial Cells Using Ultra-Sensitive Quantum Dot-Embedded Silica Nanoparticles oleh Jaehi Kim, Sunray Lee, Yeon Kyung Lee, Bomi Seong, Hyung-Mo Kim, San Kyeong, Wooyeon Kim, Kyeongmin Ham, Xuan-Hung Pham, Eunil Hahm, Ji Yeon Mun, Mukhtar Anthony Safaa, Yoon-Sik Lee, Bong-Hyun Jun, Hyun-Sook Park