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用双抗体夹心ELISA方法测定139例直肠癌患者血清可溶性白细胞介素区受体（SIL-2R）水平，结果：直肠癌患者血清SIL-2R水平明显高于正常人（P＜0．01），其水平与临床分期有关，与病理类型无关（P＞0．05）。结论：直肠癌患者血清SIL-2R的测定对预后判断和监测复发、转移有重要意义。
Serum soluble interleukin receptors (SIL-2R) levels in 139 patients with rectal cancer were measured by double-antibody sandwich ELISA. Results: Serum SIL-2R levels were significantly higher in rectal cancer patients than in normal controls (P<0.01). The level was related to clinical stage and had nothing to do with pathological type (P>0.05). Conclusion: The determination of serum SIL-2R in rectal cancer patients is of great significance for prognosis and monitoring of recurrence and metastasis.