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We have searched for plasmids in a collection of 55 Bacillus subtilis strains isolated from various natural sources of the territory of Belarus. Twenty percent of the strains contained one or two plasmids of either 6-8 or ~90kb. Small plasmids were shown to carry a rolling circle replicon of the pC194 type. Four out of the eight large plasmids contained a related theta replicon that has no homolog...
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