ADA1 activity =Total ADA activity-ADA2 activity.112 breast cancer patients and 98 controls were included in this study.

• 结果乳腺癌患者的血清ADA和ADA2的活性明显高于对照,ADA1活性无差异;乳腺癌患者中绝经后的血清ADA和ADA2活性高于未绝经者;