Immunogen was synthetic peptide derived from human Tau. This antibody was obtained from a mice immunized with the immunogen, then fusion, selection and identification. The identified clone was called as 13G6.D3. This antibody was produced from a hybridoma resulting from the fusion of a mouse myeloma with B cells deriveded from the immunized mouse. The IgG fraction of cell culture supernatant was purified by Protein G affinity chromatography.