(C-F) Western blot analysis of p62, ubiquitin (Ub), TDP-43 and p-TDP-43 in RIPA- and urea-soluble fractions from brain (C and E) and spinal cord (D and F) of 16-month-old WT and Tmem106b-/- mice. n=5. Data presented as mean ± SEM. Unpaired Student's t test. *, p<0.05, ***, p<0.001, ****, p<0.0001. 