Fig. 11

Immunohistochemical analysis of a presenile AD case with typical cerebral amyloid angiopathy by the IgG-purified fractions of FCAs
The cortex of a neuropathologically diagnosed presenile AD case with CAA was incubated with the IgG-purified fractions of FCA18 (A; 1:500 dilution), FCA3340 (B, 1:50 dilution), or FCA3542 (C, 1:50 dilution), and immunoreactivity was revealed by the biotin-streptavidin-peroxidase method. L, leptomen-ingeal arterioles; C, cortical arterioles; black arrow indicates immature plaque, and white arrowheads indicate mature lesions. Magnification: A–C, × 50.