Both p-tau Ser356 (Fig. 3h) and AT8 (Fig. 3i) were also found to co-localise with PSD95 in AD brains (**F(1,7.38) = 12.5, p = 0.0088, *F(1,7.14) = 9.08, p = 0.019, respectively). Here, MAPT is linked to Alzheimer disease.