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Schematic diagram of physically cross-linked DNA hydrogel for capturing stem cells. (A) The 3D DNA hydrogel network synthetic process through rolling circle amplification. (B) To visualize the formation process of DNA hydrogel network, DNA chain 1 and DNA chain 2 were stained with SYBR green and gel red, respectively. (C) The process BMSCs capturing, encapsulating, and releasing by the DNA hydrogel. Adapted with permission from Yao et al. (2020).
