Fig. 1. Cytotoxicity test for encapsulated islet cells. Isolated murine islet cells were encapsulated with alginate hydrogel cross-linked either by calcium ion (Al-Ca2+) or catechol (alginate-catechol [Al-CA]). (A) Microscopic image of encapsulated islet cells with Al-CA hydrogel on the 7th day after the encapsulation. (B) Acridine orange and propidium iodide (PI) staining at different days post-encapsulation. No PI signal over 7 days post-encapsulation was detected. HA-ME+Col, hyaluronic methacrylate+collagen.
