Alternate protein profiles in the spinal cord induced by OEC transplantation. (A) The study design for protein array analysis. (B) Principal component analysis among the OEC group, vehicle group, and control group. (C) Heat map presenting differentially expressed proteins in the OEC group, vehicle group, and control group. (D) Antibody array profiles among the three groups. IL-1α, IL-1β, IL-1Ra, Notch-1, and Notch-2 were detected with Raybio cytokine antibody array-3 and cytokine antibody array-4. Their location in the array is labeled by white underscores. (E) ELISA analysis of IL-1α, IL-1β, IL-1Ra, Notch-1, and Notch-2. *p < 0.05, **p < 0.01, ***p < 0.001.