Fig. 6From: Nanoengineered injectable hydrogels derived from layered double hydroxides and alginate for sustained release of protein therapeutics in tissue engineering applicationsIn vitro biocompatibility test. A and B Biocompatibility of HaCaT keratinocytes and BLO-11 mouse muscle fibroblast cells incubated with hydrogel formulation for 24Â h. C Live and dead images of BLO-11 mouse muscle fibroblast cells stained by calcein-AM and propidium iodide (PI) (green (calcein-AM): live cells; red (PI): dead cells) observed using confocal laser scanning microscopyBack to article page