Precise tumor delineation in clinical tissues using a novel acidic tumor microenvironment activatable near-infrared fluorescent contrast agent - Chang-Chun Ling; Tiantian Sun; Fang Chen; Hongmei Wu; Weizhi Tao; Xudong Xie; Dongliang Ji; Ge Gao; Jun Chen; Yong Ling; Yanan Zhang (Analytica Chimica Acta, 2023)