Fig. 4From: RETRACTED ARTICLE: Impact of NF-κB pathway on the intervertebral disc inflammation and degeneration induced by over‐mechanical stretching stressEffects of NF-κB inhibition on over-mechanical stretching stress induced intervertebral disc degeneration in rat nucleus pulposus cells. Real-time PCR was used to measure the mRNA expressions of MMP-3 (a), MMP-13 (b), Aggrecan (c) and Collagen II (d). Data are presented as mean ± SD. *p < 0.05, **p < 0.01, ***p < 0.001 between the indicated groupsBack to article page