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Borriello, S P., B W. Wren, S. Hyde, S V. Seddon, P. Sibbons, M M. Krishna, S. Tabaqchali, S. Manek, e A B. Price. Molecular, Immunological, and Biological Characterization of a Toxin A-negative, Toxin B-positive Strain of Clostridium Difficile. 1992.

Borriello, S P., et al. Molecular, Immunological, and Biological Characterization of a Toxin A-negative, Toxin B-positive Strain of Clostridium Difficile. 1992.