了解鼠伤寒沙门菌L型变异对细菌质粒和外膜蛋白的影响。

Aim:To investigate the influence of the L-forms variation of Salmonella typhimurium on their plasmids and outer membrane proteins.

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目的：探讨鼠伤寒沙门菌的L型变异对噬菌体敏感性的影响。

Objective: To investigated the effect on phage sensitivity resulting from the Lforms variation of Salmonella typhimurium.

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我国石蒜属植物不仅种类繁多，而且具有丰富的花色、花型变异。

There are various species of Lycoris plants in our country, which have rich variations in colors and shapes of flower.

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