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1967年,Braganca 等人曾自过氯酸(HClO_4)处理过的眼镜蛇(Naja naja)毒分离出一种对吉田肉瘤(Yoshida Sarcoma)细胞具有特异的杀细胞作用的硷性蛋白质。最近我们自同一粗毒先用葡聚糖凝胶 G—50与 G—75过滤,随后用羧基甲基纤维素
In 1967, Braganca et al. isolated a stimulatory protein that had a specific cytocidal effect on Yoshida Sarcoma cells from perchloric acid (HClO_4)-treated Naja naja. Recently we used the same crude drug to filter with dextran gel G-50 and G-75, followed by carboxy methyl cellulose.