Fig. 4
From: Effect of photoinitiator on chain degradation of hyaluronic acid
Photographs of photocrosslinked HA/Tyr hydrogel, a HA/Tyr solution before (left) and after (right) visible light irradiation for 30 s, b photograph showing easy handling of the HA/Tyr hydrogel with surgical forceps, and (c) transparency of the HA/Tyr hydrogel