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MASAHIRO HATSU
Institute of Microbial Chemistry
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HIROSHI NAGANAWA
Institute of Microbial Chemistry
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TAKAAKI AOYAGI
Institute of Microbial Chemistry Department of Hygienic Chemistry, Showa College of Pharmaceutical Sciences
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TOMIO TAKEUCHI
Institute of Microbial Chemistry
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YOSHIO KODAMA
Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd.