BP nanoplates were obtained from HWRK Chem (Beijing, China). Sodium hyaluronate (HA, Mw = 1.5×106) was purchased from Shanghai Yuanye Biotechnology Co. (Shanghai, China). Sodium periodate (NaIO4), F127, and ε-polylysine (EPL) were gained from Aladdin Reagent Co. (Shanghai, China). All materials and solvents were used as received without any further purification unless otherwise noted.
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