The first biopsy, performed 7 years before the present investigation had showed chronic lymphoepithelial sialadenitis.
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The false negative rate of malignant liver tumors in the first biopsy procedure guided by conventional ultrasound was 9.4% (21/224).
恶性肿瘤首次常规超声引导穿刺活检假阴性率为9.4%（21/224）。
While the study is not the first to test a cancer-killing viral therapy, it is the first to thoroughly document the behavior of the virus in patients' biopsy tissue.
虽然这项研究并不是第一次测试抗癌病毒疗法，但这是第一次完整记录此类病毒在患者病变组织中的行为特征。
The experience in this case suggests that preoperative liver biopsy may be useful to exclude first-degree relative donors with potential PSC prior to LDLT for PSC.
这个病例的经验提示：在采用LDLT治疗PSC之前，手术前的肝组织活检或许有助于排除合并潜在性psc的一级亲属供体。
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