The specific activity of LDH enzyme in mature sperms of cadmium-treated mice was the same as in the control.However, cadmium could inhibit the activity of LDH-X remarkably.

• 成熟精子的总LDH活性经镉处理后未发现明显变化，但镉能显著地抑制与精子运动的能量有关的LDH-X酶的活性。