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在酸性条件下自牛胸腺组织中提取的两种可透析组分,经离子交换层析将其分开,分别命名为可透析胸腺提取物—细胞毒刺激因子a(DTE-CSFa)和可透析胸腺提取物—细胞毒刺激因子b(DTE-CSFb)。作者对这两种因子的生物学活性作了分析。作者采用纯系STU小鼠,试验组于肿瘤细胞攻击前14天开始隔日分别注射50μg、5μg、2μg的CSFa/b。肿瘤细胞攻击后的35天每天分别注射上述剂量CS Fa/b.对照组则
Two dialysis components extracted from bovine thymus tissue under acidic conditions were separated by ion exchange chromatography and named as dialysisable thymus extract - cytotoxic stimulator (DTE-CSFa) and dialysisable thymus Extract - cytotoxic stimulator b (DTE-CSFb). The authors analyzed the biological activities of these two factors. The authors used pure-line STU mice, and the experimental group was injected with 50 μg, 5 μg, and 2 μg of CSFa / b every other day 14 days before tumor cell challenge. Thirty-five days after tumor cell challenge, the above doses of CS Fa / b were injected daily