Fig. 3

The preparation process and structure diagram of bioactive DNA hydrogels: a DNA-nSi hydrogels. Reprinted from Ref. [63], Copyright 2018, American Chemical Society. b DNA-OA-nSi hydrogels. Reprinted from Ref. [64], Copyright 2020, Elsevier. c AuNS-DNA and AuNR-DNA hydrogels. Reprinted from Ref. [65], Copyright 2017, Elsevier. d CPT-DNA hydrogels. Reprinted from Ref. [66], Copyright 2020, American Chemical Society