Fig. 7From: Single-cell RNA-seq analysis reveals the Wnt/Ca2+ signaling pathway with inflammation, apoptosis in nucleus pulposus degenerationExpression of the marker genes. Differential expression analysis was performed comparing marker genes within NP-degenerative and NP-normal. Stars indicate significance level of gene expression difference between two samples by Wilcox test. *, p value < 0.05; **, p value < 0.01; ***, p value < 0.001Back to article page