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Appl Environ Microbiol. 1971 September; 22(3): 260-262
Copyright © 1971 American Society for Microbiology. All Rights Reserved.
Research Institute of Swedish National Defence, Sundbyberg 4, Sweden
ABSTRACT
The cation content in commercial media obtained from two manufacturers showed considerable variation. Even different batches of the same make were found to be inconsistent in the content of metal ions. With cultures of Cytophaga sp. and Yersinia pseudotuberculosis in base media, growth stimulation was dependent on additions of certain commercial media. It could be demonstrated that this stimulation was derived solely from increased Mg2+ concentration in the media.
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