Figure 9. The expression analysis of the lncRNAs and mRNAs in chordoma tissues with serious dural penetration and without dural penetration. The expression level of (A) 5 down-regulated lncRNAs and 5 up-regulated lncRNAs, (B) 5 down-regulated mRNAs and 5 up-regulated mRNAs, (C) EGF mRNA and ABCC6P1, AL078621.4 lncRNAs were analyzed using qRT-PCR, with the GAPDH gene as an internal control. Error bars represent the standard errors of independent samples.*P<0.05.