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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现代细菌学研究的方法学始于19世纪晚期，包括建立细菌染色方法和在培养基中进行微生物分离的技术，当时的培养基是用明胶和琼脂固化的营养物质。

The modern methods of bacteriological technique began in the late 19th century with the use of stains and the development of methods of cultivating organisms on plates of nutrients.

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