Fig. 5

H&E and SF images of intervertebral disc tissues with different types of herniation and histological grade. (A) Overall and magnified images of H&E and SF staining of the L5/6 intervertebral discs in rats from different groups. Magnified images are used to reveal details of structural changes in the disc and herniated nucleus pulposus. (B) Quantitative analysis of histological grade of L5/6 intervertebral disc in different groups of rats, ***<0.001, ****<0.0001