CD4 and Intervertebral disk degeneration: According to Figure 9E, the expression of 28 immune cells between the two subtypes of the intervertebral disc degeneration dataset is shown in activated B cell, activated CD4 T cell, activated CD8 T cell, central memory CD4 T cell, effector memory CD8 T cell, gamma delta T cell, image B cell, memory B cell, regulatory T cell, T follicular helper cell, type 1 T helper cell, type 2 T helper cell, image dendritic cell, MDSC, and natural killer T cell, showing statistically significant differences (P < 0.05).