Methods The blood vessel formation in the cancerous and adjacent normal liver tissues in 21 patients with PHC were studied by pathological and immunohistochemical examinations ( CD34 and Ulex europaeus agglutinin 1, UEA-1). 方法用病理及CD34、荆豆凝聚素(UEA-1)免疫组化的方法对21例肝癌及癌旁组织中血管形成进行检测和观察。