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Hepatology (Baltimore, Md.)|February 1, 1990
Molecular characterization of a new variant of hepatitis B virus in a persistently infected homosexual manR A Bhat, P P Ulrich, G N Vyas
PCR Methods and Applications|February 1, 1993
An improved method for the detection of hepatitis C virus RNA in plasma utilizing heminested primers and internal control RNAP P Ulrich, J M Romeo, L J Daniel, et al.
Journal of Medical Virology|November 1, 1991
Lack of evidence of occult human immunodeficiency virus in seronegative individuals at very high risk of infectionS M Crowe, T Elbeik, P P Ulrich, et al.
Hepatology (Baltimore, Md.)|February 1, 1993
Analysis of hepatitis C virus RNA prevalence and surrogate markers of infection among seropositive voluntary blood donorsJ M Romeo, P P Ulrich, M P Busch, et al.
The Journal of Infectious Diseases|July 1, 1989
Enzymatic amplification of hepatitis B virus DNA in serum compared with infectivity testing in chimpanzeesP P Ulrich, R A Bhat, B Seto, et al.
Journal of Medical Virology|October 1, 1990
A precore-defective mutant of hepatitis B virus associated with e antigen-negative chronic liver diseaseP P Ulrich, R A Bhat, I Kelly, et al.
AIDS (London, England)|July 1, 1991
Use of polymerase chain reaction for the early detection of HIV infection in the infants of HIV-seropositive womenP S Weintrub, P P Ulrich, J R Edwards, et al.
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