In vivo near infrared fluorescence imaging and dynamic quantification of pancreatic metastatic tumors using folic acid conjugated biodegradable mesoporous silica nanoparticles - Li, H R; Li, K; Dai, Y P; Xu, X Y; Cao, X; Zeng, Q; He, H YL; Pang, L J; Liang, J M; Chen, X L; Zhan, Y H (Nanomed-Nanotechnol, 2018)