Fig. 2
From: Complement-mediated microangiopathy in IgA nephropathy and IgA vasculitis with nephritis
Typical examples of complement staining and co-localization with microangiopathy. Typical examples of complement staining in glomeruli (a) and arterioles (b). C4d staining (c) was co-localized with microangiopathy (d) in the same glomerular capillary (black arrowhead) and arteriole (white arrowhead) of a patient with microangiopathy in sequentially sectioned tissue. a–c show C4d staining; d shows phosphotungstic acid hematoxylin (PTAH) staining, with fibrin staining as deep blue
