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作者用灵敏的萤光测定方法比较了正常肝、六种具有不同生长速度的 Morri~s肝癌和再生肝中5~′-核苷酸磷酸二酯酶(简称5~′-NPD 酶,下同)活力。结果表明,快速生长肝癌7777的5~′-NPD 酶活力与其宿主肝酶活力之比值是15.2±5.4,而且在肿瘤生长期间,它们各自的酶活力波动不是太大。中速生长肝癌7794A 的5~′-NPD 酶活力也明显高于宿主,并且在肿瘤生长到60～80天时,肿瘤和宿主中各自的酶活力都达到最高值,以后又逐渐降
The authors compared the normal liver, six kinds of Morris cancers with different growth rates, and 5′-nucleotide phosphodiesterases in the regenerative liver (abbreviated as 5′-NPD enzymes), using the sensitive fluorescence measurement method. )vitality. The results showed that the ratio of the 5′′-NPD enzyme activity of the rapidly growing hepatocellular carcinoma 7777 to its host liver enzyme activity was 15.2±5.4, and their respective enzyme activities fluctuate not much during the tumor growth. The 5′′-NPD enzyme activity of moderately growing hepatocellular carcinoma 7794A was also significantly higher than that of the host, and when the tumor grew to 60-80 days, the respective enzyme activities of the tumor and the host reached the highest value, and then gradually decreased.