Cryptic Plasmids in a Minicell-Producing Strain of Salmonella typhimurium

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RESUMO

A minicell-producing strain of Salmonella typhimurium contains two cryptic plasmids. One has a molecular weight of 2.6 × 106 to 2.8 × 106, is present in multiple copies per cell, and segregates into minicells. The other has a molecular weight of 130 × 106, is present in few copies per cell, and probably does not segregate into minicells.

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