fig11
![Zwitterionic hydrogels and their biomedical applications: a review](https://image.oaes.cc/e5c927e2-0cf9-4a49-9ed5-851d2f6e14b9/cs3050.fig.11.jpg)
Figure 11. (A) ROS production in RPMI 1640 mediums associated with HEPES and zwitterionic polybetaines. Reproduced with permission from[160]. Copyright 2023, Elsevier; (B) Zwitterionic composite hydrogel for wound healing. Reproduced with permission from[162]. Copyright 2022, Elsevier; (C) Cartilage mimicking bilayer structure by brushing up stiff hydrogels from subsurface. Reproduced with permission from[27]. Copyright 2020, Wiley-VCH GmbH. SBMA: Sulfobetaine methacrylate; MPC: 2-methacryloyloxyethyl phosphorylcholine; CBMA: carboxybetaine methacrylate; HEPES: 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid; NFC: nanofibrillated cellulose; PDA: polydopamine; HHy: high-strength hydrogel; ROS: reactive oxygen species; RPMI: Roswell Park Memorial Institute.