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Open Access Differentiation of Mouse Hepatitis Viruses in Animal Facilities in Japan by Use of Nucleotide Analysis of the Nucleocapsid Gene

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The nucleotide sequences of the coding region of the nucleocapsid (N) gene of 12 mouse hepatitis virus (MHV) strains recently found in animal facilities in Japan were analyzed. Nucleotide sequencing was performed directly on polymerase chain reaction (PCR) products amplified by reverse transcription (RT) and polymerase chain reaction (RT-PCR) analysis from fecal samples or isolated viruses. Phylogenetic analysis of these MHV strains along with those reported previously indicated that sequence analysis of the N gene was a useful tool for differentiation of MHV strains, although most MHV strains in Japanese facilities were phylogenetically close. Results suggested that interchange of mice infected with MHV among facilities provided opportunities of introduction of MHV into otherwise MHV-free facilities and that the source of MHV infection could be traced by use of nucleotide analysis of the N gene.

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Document Type: Research Article

Affiliations: 1: Division of Experimental Animal Research, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011 2: Division of Microbiology and Genetics, Center for Animal Resources and Development, Kumamoto University, Kumamoto 960-0811, Japan

Publication date: 2001-08-01

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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