MAPT and Alzheimer disease: We found that both HA-tau1-441 and HA-tau151-391 were recruited from the cell lysates by AD O-tau dose-dependently, but much more tau151-391 than tau1-441 was captured (Fig. 1b,d), even when the expression level of tau151-391 in the cell lysate was less than tau1-441 (Fig. 1c).