A Novel DNA Virus (TTV) Associated with Elevated Transaminase Levels in Posttransfusion Hepatitis of Unknown Etiology

Tsutomu Nishizawa, Hiroaki Okamoto, Keiko Konishi, +3

Biochemical and Biophysical Research Communications

Diagnostic VirologyMolecular VirologyHepatologyViral HepatitisPathology +7

Typing Hepatitis B Virus by Homology in Nucleotide Sequence: Comparison of Surface Antigen Subtypes

Hiroaki Okamoto, Fumio Tsuda, Hiroshi Sakugawa, +4

Journal of General Virology

E Antigen and Anti-E in the Serum of Asymptomatic Carrier Mothers as Indicators of Positive and Negative Transmission of Hepatitis B Virus to Their Infants

Kiyshi Okada, Ichiro Kamiyama, Minako Inomata, +3

New England Journal of Medicine

VaccinationMaternal ImmunizationInfectious Disease PreventionHepatologyViral Hepatitis +12

Hepatitis B viruses with precore region defects prevail in persistently infected hosts along with seroconversion to the antibody against e antigen

Hiroaki Okamoto, S Yotsumoto, Y. Akahane, +7

Journal of Virology

VaccinationViral ReplicationMolecular VirologyViral PersistenceC Gene +13

Hepatitis B virus with mutations in the core promoter for an e antigen-negative phenotype in carriers with antibody to e antigen

Hiroaki Okamoto, Fumio Tsuda, Y. Akahane, +6

Journal of Virology

GeneticsImmunologyHepatitis BPathologyHepatitis B Virus +15

Nucleotide sequence of the genomic RNA of hepatitis C virus isolated from a human carrier: comparison with reported isolates for conserved and divergent regions

Hiroaki Okamoto, S Okada, Yuichi Sugiyama, +5

Journal of General Virology

Infection with Hepatitis GB Virus C in Patients on Maintenance Hemodialysis

Kazuo Masuko, Takehiro Mitsui, Keiko Iwano, +9

New England Journal of Medicine

Naturally occurring escape mutants of hepatitis B virus with various mutations in the S gene in carriers seropositive for antibody to hepatitis B surface antigen

Kayoko Yamamoto, Minoru Horikita, Fumio Tsuda, +6

Journal of Virology

Escape MutantsViral ReplicationMolecular VirologyPoint MutationsViral Hepatitis +12

Serological detection of hepatitis B virus genotypes by ELISA with monoclonal antibodies to type-specific epitopes in the preS2-region product

Sadakazu Usuda, Hiroaki Okamoto, Hiroko Iwanari, +4

Journal of Virological Methods

VaccinationDiagnostic VirologySerological DetectionViral DiagnosticsViral Hepatitis +10

Hepatitis B e Antigen and Infectivity of Hepatitis B Virus

Toshio Shikata, T. Karasawa, Kenji Abe, +6

The Journal of Infectious Diseases

VaccinationDiagnostic VirologyIncubation PeriodHbs AgHbe Ag +9