Both total and phosphorylated tau are increased in Alzheimer's disease
M Sjögren, P Davidsson, M Tullberg, L Minthon, A Wallin, C Wikkelso, A-K Granérus, H Vanderstichele, E Vanmechelen, K Blennow
Journal of Neurology, Neurosurgery & Psychiatry May 2001, 70 (5) 624-630; DOI: 10.1136/jnnp.70.5.624