目的建立甘氨酰脯氨酰二肽氨基肽酶（GPDA）自动化分析方法。

Objective To establish a kinetic monitoring assay for detecting glycylproline dipeptidyl aminopeptidase (GPDA). Methods Gly-pro-pNA.

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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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