Tetracycline-resistant Fusobacterium nucleatum, Haemophilus ducreyi, Mycoplasma hominis, Peptostreptococcus spp., Ureaplasma urealyticum, and Veillonella parvula had DNA sequences which showed homology throughout the length of the Tet M transposon, Tn916. In contrast, Gardnerella vaginalis, commensal Neisseria spp., and the 25.2-megadalton plasmid family lacked the complete transposon.
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Marilyn C. Roberts (1990) studied this question.
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