Figure 16From: Over-expression of glutamine synthase in focal nodular hyperplasia (part 1): Early stages in the formation support the hypothesis of a focal hyper-arterialisation with venous (portal and hepatic) and biliary damageGS and α SMA staining. A closer view (see Fig. 8 box in the middle): upper micrograph (A) has GS staining, and lower micrograph (B) displays α-SMA staining. It illustrates another example of the close vicinity between arteries (α-SMA staining) and hepatic veins (GS staining).Back to article page