Fig. 1From: The Aβ1–42/Aβ1–40 ratio in CSF is more strongly associated to tau markers and clinical progression than Aβ1–42 aloneDistribution of participants according to CSF levels of Aβ1–42 and amyloid ratio within diagnostic categories. CN, cognitively normal; AD, Alzheimer’s disease; DLB, dementia with Lewy bodies; FTLD, frontotemporal lobar degeneration-related syndrome. Dashed lines indicate 95% quantile values (Q95%) for Aβ1–42 and Aβ1–42/Aβ1–40 in a middle-aged cognitively normal population as described in the “Material and methods” sectionBack to article page