肠致活酶作用于蛋白酶原。
当组织损伤时，释放出凝血致活酶，把凝血酶原变成凝血酶。
When the tissue damage, the release of thromboplastin to prothrombin into thrombin.
研究表明：在测定条件一致的情况下，酶制剂浸提倍数、稀释倍数、浸提次数对酶活测定结果均有显著影响。
The result showed that in case assay conditions were identical, the soak multiple, dilution multiple and soaking times of crude xylanase all influenced the activity of the xylanase.
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