Fig. 2From: Excessive mechanical stress-induced intervertebral disc degeneration is related to Piezo1 overexpression triggering the imbalance of autophagy/apoptosis in human nucleus pulpousHistological analysis and the expression of Piezo1 and type II collage in human nucleus pulposus tissues. A, B Hematoxylin and eosin (H&E) staining in human NP tissues of the control or the IVDD group (200×). C, D Piezo1 immunostaining in human NP tissues of the control or the IVDD group (100×). E The percentage of Piezo1 positive cells to all cells in the field (%). F, G Type II collage immunostaining in human NP tissues of the control or the IVDD group (100×). H The percentage of Col II positive cells to all cells in the field (%). *p < 0.05Back to article page