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本实验测定了２１种不同浓度的中药合剂对双歧杆菌增殖的影响，结果显示：①其中１１种中药对双歧杆菌具有不同程度的促增殖作用。②某些药物对各个浓度虽均有一定的促双歧作用，但在其中某一个浓度下作用最强。③有些药物在不同浓度，对双歧杆菌增殖的影响截然不同，分别表现出促进、无影响或抑制。从此提示：在测试中药对细菌的作用时，应尽可能多选择几个浓度。
In this experiment, the effect of 21 different concentrations of Chinese medicine mixture on the proliferation of Bifidobacterium was determined. The results showed that: 1 Of these, 11 kinds of Chinese herbs had different degrees of proliferative effects on Bifidobacteria. 2 Although some drugs have certain biphasic effects on each concentration, they have the strongest effect at a certain concentration. 3 Some drugs have different effects on the proliferation of Bifidobacterium at different concentrations, showing respectively promotion, no effect or inhibition. From this tip: When testing the effect of Chinese medicine on bacteria, several concentrations should be selected as much as possible.