fig1
From: Biomedical DNA hydrogels
![Biomedical DNA hydrogels](https://image.oaes.cc/bf1be2f6-7e96-4bf7-9e72-52576a2cc288/4610.fig.1.jpg)
Figure 1. Self-assembly of all-DNA hydrogels through (A) hybridization of DNA sticky ends[28], (B) formation of i-motifs[29], (C) enzymatic ligation[27] and (D) physical entanglement[31]. (A, B) Reprinted with permission from Refs.[28,29]. Copyright 2009, 2011 Wiley-VCH. (C, D) Reprinted with permission from Refs.[27,31]. Copyright 2006, 2012 Springer Nature.