Screening of anti-hypoxia/reoxygenation agents by an in vitro model. Part 1: Natural inhibitors for protein tyrosine kinase activated by hypoxia/reoxygenation in cultured human umbilical vein endothelial cells - Zhang,Y.W.; Morita,I.; Shao,G.; Yao,X.S.; Murota,S. (Planta Medica, 2000)