Retraction: Enhanced anti-tumor efficacy of hyaluronic acid modified nanocomposites combined with sonochemotherapy against subcutaneous and metastatic breast tumors (Nanoscale (2019) 11 (11470–11483) DOI: 10.1039/C9NR01691K)

We, the named authors, hereby wholly retract this Nanoscale article. At the request of Mingxi Wan and Yujin Zong, this Nanoscale article has been retracted due to the number of images with errors. The named authors hereby wholly retract this article. In Fig. 6A there is overlap between the panels 0 h (f ) and 0 h (h), and 24 h (a) and 24 h (b) and partial overlap between the panels 0 h (b) and 0 h (d), and 24 h (c) and 24 h (d). In Fig. 6B there is partial overlap between the panels a, b, c and d, c and e, and f and g. In Fig. 7 there is strong similarity between the free ICG panels 1 h, 3 h, 12 h and 24 h. In Fig. 9 there is partial overlap between the panels (-) US HPCD, CD31 and (+) US HPCD, CD31. In Fig. 10F there is partial overlap between the panels 3# and 4#. In Fig. S7 there is partial overlap between the Heart panels 1# and 8#, and the Spleen panels 4# and 5#. There is overlap between the Liver panels 2# and 3#. If interested readers need the corrected images, they can be provided by the first author Pengying Wu. The named authors apologize to the readership for any inconvenience caused. Signed: Pengying Wu, Yue Sun, Wei Dong, Huige Zhou, Shifang Guo, Lei Zhang, Xiaobing Wang, Mingxi Wan, Yujin Zong. 7th November 2022 Retraction endorsed by Heather Montgomery, Managing Editor, Nanoscale.