Abstract
TRANSMISSIBLE R factors in bacteria are divisible into two main classes, fi+ (fertility inhibition +) and fi−, according to their effect on F mediated conjugation1. fi+ R factors determine F-like pili2. Some fi− R factors determine pili similar to those specified by col I (I-type pili)3 which can be recognized as receptors for I-specific phages like If1 (ref. 4). Although heterogeneity among fi− R factors has already been indicated5–8, it is sometimes assumed that all fi− R factors have I pili9,10.
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DATTA, N., HEDGES, R. Compatibility Groups among fi− R Factors. Nature 234, 222–223 (1971). https://doi.org/10.1038/234222a0
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DOI: https://doi.org/10.1038/234222a0
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