Source
Department of Microbiology, Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan.
Abstract
Proteolytic Clostridium botulinum type B strains were investigated for stability of toxigenicity and bont/b gene upon serial passage. Strains with bont/b gene located on their plasmids showed loss or decrease of toxigenicity during serial passage. Some strains lost the bont/b gene-encoding plasmid. The stability of the plasmids varied between strains.
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