Fluorescence images using MSA-ICG and ICG lined according to time (5, 15, 30, 60, 120 min) and metastasis status (Normal LN, Nonmetastatic LN, Metastatic LN). MSA-ICG or ICG was peritumorally injected into the footpads of mice, and an in vivo imaging system was used to study the time-dependent signal changes of the LNs. The popliteal LN (yellow…