Eight strains of Lactobacillus acidophilus were examined for the presence of plasmid deoxyribonucleic acid, and one, a pig intestinal isolate, showed the presence of a 13.7- and a 6.3-megadalton plasmid. This is the first reported evidence for plasmid deoxyribonucleic acid in Lactobacillus acidophilus. The functions of these plasmids are presently unknown.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC291397PMC
http://dx.doi.org/10.1128/aem.39.3.671-674.1980DOI Listing

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