目的：探讨甘氨酰脯氨酸二肽氨基肽酶（ GPDA）在食管贲门癌组织中的变化规律。

Objectives:To explore the change rule and clinical value of glycylproline dipeptidyl aminopeptidase(GPDA) in tissues of esophageal and cardiac cancers.

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目的：探讨血清甘氨酰脯氨酸二肽氨基肽酶（GPDA）活性测定对胃癌的诊断价值及方法学改良。

Objective:To study the improvement in method of testing activities of glycylproline dipeptidylaminopeptidase(GPDA) and its value in diagnosis of gastric carcinoma.

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目的研究尿甘氨酰脯氨酸二肽氨基肽酶（GPDA）诊断老年急性脑卒中患者早期肾损害的临床应用价值。

Objective To study the clinical value of glycylproline dipeptidyl aminopeptidase(GPDA) in diagnosis of early kidney injury in the elderly with acute stroke.

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