The level of retinal-binding-protein (RBP) and transferrin (TRF) was measured by using ELISA in urine of 24 patients with cor pulmonale and 30 health subjects.

• 采用酶联免疫法检测24例肺心病患者和30例健康中老年人的尿视黄醇结合蛋白(RBP)，转铁蛋白(TRF)水平。