Fig. 2From: Investigation of MMP-1 genetic polymorphisms and protein expression and their effects on the risk of Kashin-Beck disease in the northwest Chinese Han populationMMP-1 concentrations in synovial fluids of knees from KBD and controls. Levels of MMP-1 in KBD samples were significantly higher than those in controls. Statistical significance was determined using t test. Result was considered to be significant at P < 0.05Back to article page