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Motility assays revealed that both pathogenic and saprophytic strains increase their swimming speeds with increasing viscosity. However, only pathogenic <jats:italic>Leptospira interrogans<\/jats:italic> maintained vigorous motility near physiological osmotic conditions. This suggests that active motility in physiological conditions is advantageous when <jats:italic>Leptospira<\/jats:italic> enters hosts and when it migrates toward target tissues.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1348-0421.12018","type":"journal-article","created":{"date-parts":[[2012,12,21]],"date-time":"2012-12-21T23:54:56Z","timestamp":1356134096000},"page":"236-239","source":"Crossref","is-referenced-by-count":19,"title":["Effect of osmolarity and viscosity on the motility of pathogenic and saprophytic <i>Leptospira<\/i>"],"prefix":"10.1111","volume":"57","author":[{"given":"Kyosuke","family":"Takabe","sequence":"first","affiliation":[{"name":"Department of Applied Physics Graduate School of Engineering, Tohoku University 6\u20106\u201005 Aoba, Aoba\u2010ku Sendai, Miyagi 980\u20108579"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuichi","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Applied Physics Graduate School of 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