Figure 17From: 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 damageArterial vessels. A – GS staining. B – α-SMA. Arterial vessels (arrow, insert) were in close contact with the large hepatic vein partly surrounded by GS-positive hepatocytes.Back to article page