Article
[Corynebacterium diphtheriae nontoxigenic strain carrying the gene of diphtheria toxin].
Zhurnal mikrobiologii, epidemiologii i immunobiologii - 1 Jan 2000
Mel'nikov V G, Kombarova S Iu, Borisova O Iu, Volozhantsev N V, Verevkin V V, Volkovoĭ K I, Mazurova I K
Abstract excerpt
Among 828 C. diphtheriae nontoxigenic cultures isolated in different region of Russia in 1994-2002, 114 cultures (13.8%) had the gene of diphtheria toxin (gene tox) and were thus called nontoxigenic tox-carrying (NTTC) strains. All NTTC strains were found to belong to biovar mitis and formed neither normal, nor "defective" diphtheria toxin. The most of NTTC strains (94%) belonged to ribotype "Moskva", not...
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