Sinusoidal origin of increased sdf1 after partial hepatectomy. Sdf1 protein expression increases 2.3-fold in liver sinusoidal endothelial cells (LSECs) 72 h after partial hepatectomy (P < 0.0005) but remains undetectable in hepatocytes and hepatic stellate cells (n = 3). Lane a, hepatic stellate cells after sham surgery; lane b, hepatic stellate cells after partial hepatectomy; lane c, hepatocytes after sham surgery; lane d, hepatocytes after partial hepatectomy; lane e, LSECs after sham surgery; lane f, LSECs after partial hepatectomy.