Figure 4From: Pro-oxidant status and matrix metalloproteinases in apical lesions and gingival crevicular fluid as potential biomarkers for asymptomatic apical periodontitis and endodontic treatment responseImmunolocalization of MMP-9 and MMP-2 in apical granulomas. A-B: MMP-9; C-D: MMP-2; M: Mononuclear inflammatory cells; PMN: Neutrophils.Back to article page