Figure 12.
Boronate gel-based insulin delivery system. Schematic showing the chemical structure of the boronate gel-based insulin delivery system and optimal glucose-responsive insulin delivery under physiological conditions (threshold concentration of glucose at normoglycemic (100 mg/dL), above which the gel delivers insulin). Reproduced with permission from ref (253). Copyright 2017 The Authors, some rights reserved; distributed under a Creative Commons Attribution-NonCommercial License 4.0 (CC BY-NC).