Fig.1From: Relative expression of hormone receptors by endothelial and smooth muscle cells in proliferative and non-proliferative areas of congenital arteriovenous malformationsSerial sections of a case of AVM lesion stained with (A) H&E and IHC with (B) CD31 (C) SMA-1 (D, E) Ki67 antibody. Black squares in figs A, B, C, D indicate area with MVP, which is enlarged in fig (E), showing many Ki67 immunopositive cells in the vessel walls of microvessels immunopositive nuclear staining. Asterisk (*) is in the lumen of a large blood vessel of the AVMBack to article page