Fig. 2From: Sustained delivery of MMP-9 siRNA via thermosensitive hydrogel accelerates diabetic wound healingThe cytotoxicity of GT/siMMP-9 complexes on HaCaT cells in vitro. a Cell viability assessed by CCK-8 assay and b Cell death determined by released LDH after 24 h incubation with GT/siMMP-95/10/20 complexes. c, d Early (Annexin V+, 7-AAD−) and late (Annexin V+, 7-AAD+) stage apoptosis of cells after 24 h incubation with GT/siMMP-95/10/20Back to article page