Western blotting (A, B) and immunohistochemical (C) analysis of PGK2, SORD, HSPA1L and HSPA9 in WT and Cmtm4 KO mice. The integrated optical density (IOD) ratio of target protein to ACTB was used to express the results of the Western blot analysis. Lines (C) indicate mean values, whiskers indicate standard deviation; Data were compared by Student's t test; *, p < 0.05; Each bar represents 50 μm.