1 Institute of Ultrasound Imaging & Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ultrasound Molecular Imaging, 400010, Chongqing, P. R. China. 300006@hospital.cqmu.edu.cn.
2 Department of Ultrasound, Fudan University Shanghai Cancer Center, 200032, Shanghai, P. R. China.
3 Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, 400010, Chongqing, P. R. China.
4 Shanghai Institute of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 200233, Shanghai, P. R. China. c1x2j34@163.com.
Retraction of 'A near-infrared laser and H2O2 activated bio-nanoreactor for enhanced photodynamic therapy of hypoxic tumors' by Liming Deng et al., Biomater. Sci., 2020, 8, 858-870, https://doi.org/10.1039/C9BM01126A.