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Sagt CM, Müller WH, Boonstra J, Verkleij AJ, Verrips CT.Sagt CM, et al. Among authors: verkleij aj.Appl Environ Microbiol. 1998 Jan;64(1):316-24. doi: 10.1128/AEM.64.1.316-324.1998.Appl Environ Microbiol. 1998.PMID: 9435084Free PMC article.