Department of Medical Microbiology and Immunology, Genome Center, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.|Department of Medical Microbiology and Immunology, Genome Center, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.|Department of Medical Microbiology and Immunology, Genome Center, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.|Department of Medical Microbiology and Immunology, Genome Center, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.|Department of Medical Microbiology and Immunology, Genome Center, University of California Davis, One Shields Avenue, Davis, CA 95616, USA.