Non-invasive optical imaging tools for early detection of anti-tumor immune responses are essential for precision cancer immunotherapy. Here, the authors report a rare-earth-based NIR-II fluorescence ratiometric nanoprobe (DCGA) for in vivo real-time, precise, and non-invasive visualization of granzyme B activity for early prediction of immunotherapy efficacy.
- Lei Ding
- Xiaolong Zhang
- Xiaolong Liu
