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Norihisa NOGUCHI
Department of Microbiology, Tokyo College of Pharmacy
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Keiichi OHMIYA
Department of Microbiology, Tokyo College of Pharmacy
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Takaaki TANAKA
Department of Microbiology, Tokyo College of Pharmacy
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Koji O'HARA
Department of Microbiology, Tokyo College of Pharmacy
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Megumi KONO
Department of Microbiology, Tokyo College of Pharmacy Address for correspondence and requests for reprints: Megumi Kono, M. D., Department of Microbiology, Tokyo College of Pharmacy