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Time course of pro‐metalloproteinase 2 (pro‐MMP9) levels measured in normal and ischaemic wounds treated with placebo or platelet‐derived growth factor (PDGF). Pro‐MMP9 levels in normal and ischaemic wounds treated with placebo or PDGF was determined by gelatin zymography on days 1, 3, 5, 7, 9 and 13 after surgery.
