Fig. 1From: Vitamin D inhibits TNF-α induced apoptosis of human nucleus pulposus cells through regulation of NF-kB signaling pathwayBioinformatic analysis of GSE34095. A Expression level of GSE34095 before and after normalization. B Volcano plot of the differentially expressed genes between degenerative and non-degenerative intervertebral discs tissues. C Heatmap of the top 100 differentially expressed genes between degenerative and non-degenerative intervertebral discs tissuesBack to article page