The angiopoietin/Tie-2 system in proliferative sickle retinopathy: relation to vascular endothelial growth factor, its soluble receptor Flt-1 and von Willebrand factor, and to the effects of laser treatment.

增生性镰状细胞视网膜病变中的血管生成素/Tie-2 系统：与血管内皮生长因子、其可溶性受体 Flt-1 和血管性血友病因子以及激光治疗效果的关系