. "The spread of orf513-bearing class 1 integrons is associated with bla(CTX-M-2) in gram-negative clinical isolates in Argentina, with In35 being the most frequently found integron (74%). Among 65 isolates without bla(CTX-M-2), only one harbored a novel orf513-bearing class 1 integron with the dfrA3b gene. The finding of orf513 not associated with class 1 integrons in two gram-positive strains indicates the widespread occurrence of this putative site-specific recombinase." . . "Antimicrob. Agents Chemother." . "Roy P.H." . "Orman B.E." . "Catalano M." . "Centron D." . "Arduino S.M." . "2003"^^ . "3945-3949" . "Molecular epidemiology of orf513-bearing class 1 integrons in multiresistant clinical isolates from Argentinean hospitals." . "47" . "doi:10.1128/AAC.47.12.3945-3949.2003" .