Fig. 2

The effect of high-intensity treadmill running on the cartilage of mice knee joints (A sections of the knee joint of the high-intensity treadmill running mice with hematoxylin–eosin staining and saffron O staining under the 200-fold light microscope; B Mankin and OARSI scores of hematoxylin–eosin staining and saffron O staining in the knee joint of high-intensity treadmill mice; MC group: model control group, M group: treadmill model group, N = 6, **P < 0.01, Mankin scores;^##P < 0.01, OARSI score)