Fig. 6

Detection of Aβ₄₂Ms and/or Aβ₄₂Os in human blood samples by dLFI. The visual results (a) and grey value (b) of the Aβ₄₂Ms and/or Aβ₄₂Os level in the blood of AD patients (n = 8) or healthy controls (n = 7) were analyzed by dLFI. c The Aβ₄₂Ms and/or Aβ₄₂Os levels in the blood of AD patients (n = 8) or healthy controls (n = 7) were detected by sandwich ELISA. d Total Aβ₄₂ levels in human blood samples were detected by sandwich ELISA (n = 8 for AD patients and n = 7 for healthy controls). Data are presented as means ± SD. Unpaired t-test was used for two-group comparisons. Statistical significance is indicated in the figures by *p < 0.05, **p < 0.01 and n.s. (indicating no significance)