Verification of Notch1, Csf1r, and PDGFRa as target genes of miR-34a and their expression changes after SCI. (A) qPCR detection of the trend of Notch1, Csf1r, and PDGFRa expression change in different stages after SCI. The horizontal coordinate represents the time points following SCI; the longitudinal coordinate represents the relative expression level of the target genes in the spinal tissue. (B) qPCR verification of changes in Notch1, Csf1r, and PDGFRa after miR-34a overexpression, compared with the control group, **** p<0.0001.