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Appl Environ Microbiol. 1975 April; 29(4): 546-548
Copyright © 1975 American Society for Microbiology. All Rights Reserved.
Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota 55108
ABSTRACT
Five plasmids, distinguishable by their molecular weights (106, 2 x 106, 5 x 106, 107, 3 x 107, respectively) were isolated from Streptococcus lactis C2. A spontaneous proteinase-negative derivative of this strain lacked the 107 plasmid.
1 Scientific Journal Series Paper No. 8945, Minnesota Agricultural Experiment Station, St. Paul, Minn.
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