Fig. 1From: No added diagnostic value of non-phosphorylated tau fraction (p-taurel) in CSF as a biomarker for differential dementia diagnosisEpitopes of different tau assays. Binding sites of antibodies making up total tau (t-tau), tau protein phosphorylated at threonine 181 (p-tau 181 ), and non-phosphorylated tau fraction (p-tau rel ) assays. Binding of antibody AT270 requires phosphorylation of threonine (T), while binding of antibody 1G2 requires threonine (T) to be not phosphorylatedBack to article page