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采用管碟法、试管法、活菌计数法对鱼腥草等中药注射液体外抗菌活性进行测定，结果表明采用活菌计数法，用原液可以测出用管碟法所不能测出的中药抑菌作用。在１／２浓度中，试管法只能测出２０％试验药中的抑菌作用，而活菌计数法则测出所有试验药的抑菌作用。
Using the dish method, test tube method, and viable count method, the external antibacterial activity of Chinese herbal medicines such as Houttuynia cordata was measured. The results showed that using the viable count method, it was possible to measure the medicines that could not be measured by the dish method using the stock solution. Bacteria effect. In the 1/2 concentration, the test tube method can only detect the bacteriostatic effect of 20% of the test drug, and the viable count method can measure the bacteriostatic effect of all test drugs.