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Varela CA, Baez ME, Agosin E.Varela CA, et al. Among authors: agosin e.Appl Environ Microbiol. 2004 Jul;70(7):4222-9. doi: 10.1128/AEM.70.7.4222-4229.2004.Appl Environ Microbiol. 2004.PMID: 15240305Free PMC article.