The lack of immune response to a xenograft of mouse cells in an immunocompetent rabbit model may suggest an as yet unrecognized immunoprivileged site within the intervertebral disc space.

具免疫活性的兔模型中缺乏对小鼠细胞异种移植物的免疫反应，表明椎间盘内可能存在尚不为人知的免疫豁免部位。

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Objective:To observe the clinical effect of antalgic pump for vertebral space infection after extraction of intervertebral disc.

目的：观察镇痛泵在椎间盘摘除术后椎间隙感染的临床应用效果。

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Result: After the tissue of intervertebral disc entered the epidural space, it would contact the blood system and be absorbed by the T-cell and monocytes in the blood system gradually.

结果：脱出的椎间盘组织进入硬膜外腔后接触血液系统，逐渐被血液系统中的T细胞及单核细胞清除吸收。

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