There is a space between a peribacteroid membrane and a bacteroid cell wall, the size of spaces is variable in different bacteroids or the different parts of a bacteroid.
在
周膜与胞壁之
有
个环形
隙，的大小随
部位不同而异。
状的There is a space between a peribacteroid membrane and a bacteroid cell wall, the size of spaces is variable in different bacteroids or the different parts of a bacteroid.
在周膜与胞壁之有个环形隙，的大小随部位不同而异。
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