MAPT and Alzheimer disease: Under this head‐to‐head comparison study, the pretreatment of AD brain lysate with the above‐mentioned respective tau antibody (mAb005, HT7, and mAb004) IgG‐resins also decreased mAb005‐mAb005(Fab’)HRP ELISA signal selectively (Figure 5B), indicating AD brain‐derived HMWoTau species have the same epitopes on the target molecule in common.