Fig. 1. Optical images of the solution of (A) SGYp (0.6 wt%, pH = 7.4), and (B) the self-assembled SGY gel triggered by ALP (10 units per mL); (C) TEM and (D) SEM images of the SGY hydrogel shown in (B). (E) CD and (F) FTIR spectra of the SGYp solution and the SGY gel shown in (A) and (B).