CONCLUSION: the mechanism of the reverse changes of enzyme activity in serum is due to the different degrees of activity inhibition by lead.
结论：铅中毒所引起的部分血清酶活性逆向变化的机制是由于其活性受到铅等因素不同程度的抑制所致。
The results show that the inhibition of tyrosinase by arbutin is a reversible reaction with remaining enzyme activity.
结果表明，熊果甙对酪氨酸酶活性的抑制作用表现为可逆抑制效应。
There is no effect of the tested meta ions on enzyme activity but the inhibition of EDTA on enzyme could be complemented by addition of Ca(superscript 2+) partially.
测试大多数金属离子对酶活力没有明显影响，但Ca（上标 2+）能很大程度地缓解EDTA对酶活的抑制作用。
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