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The marker of Japanese domestic rubella vaccines is their lack of immunogenicity in guinea pigs. This has long been thought to be related to the temperature sensitivity of the viruses, but supporting evidence has not been described. In this study, we generated infectious clones of TO-336.vac, a Japanese domestic vaccine, TO-336.GMK5, the parental virus of TO-336.vac, and their mutants, and determined...
Replication-defective adenovirus type 5 (Ad5) vector-based vaccines are widely known to induce strong immunity against immunodeficiency viruses. To exploit this immunogenicity while overcoming the potential problem of preexisting immunity against human adenoviruses type 5, we developed a recombinant chimeric adenovirus type 5 with type 35 fiber vector (rAd5/35). We initially produced a simian immunodeficiency...
Transgenic mice bearing the human poliovirus receptor (TgPVR) are less susceptible to oral inoculation, although they are susceptible to parenteral inoculation. We investigated the susceptibility of TgPVR 21 line [Arch. Virol. 130 (1994) 351] to poliovirus through various mucosal routes. Intranasal inoculation of a neurovirulent Mahoney strain (OM1) caused flaccid paralysis with viral replication...
We have monitored kinetics of peripheral blood Interleukin (IL)-18 level, viral RNA load, and CD4 + T cell counts in cynomolgus and rhesus macaques following infections of various simian/human immunodeficiency viruses (SHIVs) causing differential pathogenicity. Infections of cynomolgus and rhesus macaques with pathogenic SHIVs-C2/1 and -89.6PD, respectively, induced high levels of plasma IL-18...
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