Fig. 1
From: Preclinical effects of APOE ε4 on cerebrospinal fluid Aβ42 concentrations
CSF Aβ42 concentrations plotted against age. Mean curves for the three APOE ε4 groups: black, APOE ε4–/–; blue, APOE ε4+/–; red, APOE ε4+/+. Vertical lines indicate age at initial decline of CSF Aβ42. Aβ42 beta-amyloid1–42, CSF cerebrospinal fluid