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Volume 9, Number 9—September 2003

Research

Reemergence of Epidemic Vibrio cholerae O139, Bangladesh

Shah M. Faruque*, Nityananda Chowdhury*, M. Kamruzzaman*, Q. Shafi Ahmad*, A.S.G. Faruque*, M. Abdus Salam*, T. Ramamurthy†, G. Balakrish Nair*, Andrej Weintraub‡, and David A. Sack*Comments to Author 
Author affiliations: *International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh; †National Institute of Cholera and Enteric Diseases, Beliaghata, Calcutta, India; ‡Karolinska Instute, Huddinge, Sweden

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Figure 2

Southern hybridization analysis of rRNA genes in Vibrio cholerae O139 strains isolated from the recent epidemic and comparison with representative O139 strains isolated between 1992 and 1998. Genomic DNA was digested with BglI and probed with a 7.5-kb BamHI fragment of the Escherichia coli rRNA clone pKK3535. Lanes 1–6 represent O139 strains isolated from 1992 to 1998; lanes 6–12 represent O139 strains isolated from the recent epidemic in Bangladesh. Designated ribotypes corresponding to each restriction pattern are shown on top of the corresponding lane. Numbers indicating molecular sizes of bands correspond to 1-kb DNA ladder (Bethesda Research Laboratories, Bethesda, MD) used as molecular size markers.

Figure 2. Southern hybridization analysis of rRNA genes in Vibrio cholerae O139 strains isolated from the recent epidemic and comparison with representative O139 strains isolated between 1992 and 1998. Genomic DNA was digested with BglI and probed with a 7.5-kb BamHI fragment of the Escherichia coli rRNA clone pKK3535. Lanes 1–6 represent O139 strains isolated from 1992 to 1998; lanes 6–12 represent O139 strains isolated from the recent epidemic in Bangladesh. Designated ribotypes corresponding to each restriction pattern are shown on top of the corresponding lane. Numbers indicating molecular sizes of bands correspond to 1-kb DNA ladder (Bethesda Research Laboratories, Bethesda, MD) used as molecular size markers.

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