细菌对抗生素的敏感性用k - B法和梯度琼脂平板法测定。

And sensitivity of the bacterium to antibiotics was measured by using gradient AGAR diffusion of K-B methods.

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用脱脂奶琼脂平板法检测了1 0 0株大肠杆菌的胞外蛋白酶。

The extracellular proteases(ECPase) of 100 Escherichia coli strains were detected by using the skim milk plate.

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结果表明：冷冻干燥法保藏菌种时间最长（本实验室已保存15年）； 肉浸汤琼脂平板法保藏菌种时间最短（2～3月）。

The results indicated: freeze-drying method could do the longest preservation (at least 15 years) while beef broth agar plate method did the shortest (only 2 to 3 months).

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