The activity of lactate dehydrogenase (LDH) in the culture medium was detected. 然后用比色法测定培养液中LDH活性;
Previous studies in rodent model have had demonstrated that Streptococcus mutans which lack the enzyme activity of lactate dehydrogenase (LDH), had significantly less cariogenic. 实验已经证实LDH活性缺乏的变链菌在限菌啮齿类动物模型体内致龋性显著降低。
Keywords activity of lactate dehydrogenase;isoenzyme spectrum;hypoxia-hypercapania;plateau zokor（Myospalax baileyi）; 乳酸脱氢酶活力;同工酶谱;低氧高二氧化碳;高原鼢鼠;
Suppose skeletal muscle were devoid of lactate dehydrogenase, could it carry out strenuous physical activity; that is, could it generate ATP at a high rate by glycolysis? Explain. 解释:假设骨骼肌如果缺乏乳酸脱氢酶，它能否进行剧烈的运动?即它能否通过糖酵解高速产生ATP?