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. 1969 Feb;97(2):780–786. doi: 10.1128/jb.97.2.780-786.1969

Covert fi− R Factors in fi− R+ Strains of Bacteria

E Romero a,1, Elinor Meynell b
PMCID: PMC249760  PMID: 4886294

Abstract

The presence of an fi− sex factor can be detected by propagation of the I-specific phage If1. By use of this method of detection, a high proportion of strains with fi+ R factors were shown also to carry an fi− factor which was frequently a second R factor. In some doubly R+ strains, the fi+ and the fi− factor were observed to be transferred independently at conjugation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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