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. 1977 Mar;21(3):974–980. doi: 10.1128/jvi.21.3.974-980.1977

Natural immunity in mice to the envelope glycoprotein of endogenous ecotropic type C viruses: neutralization of virus infectivity.

J N Ihle, B Lazar
PMCID: PMC515636  PMID: 191656

Abstract

The ability of naturally immune mouse sera to neutralize ecotropic AKR murine leukemia virus (MuLV) was examined by using unfrozen virus preparations harvested for 1 h. In this assay several mouse sera significantly and consistently neutralized MuLV infectivity. The ability of these sera to neutralize was correlated with the presence of antibodies against MuLV detectable in a radioimmune precipitation assay using radioactively labeled intact virions. This neutralization was specific, in that either N- or B-tropic viruses, but not Friend MuLV, were neutralized. In addition, neutralization could be abrogated with purified AKR MuLV gp71 at concentrations that do not interfere with virus infectivity but could not be abrogated with Rauscher MuLV gp71. Neutralizing activity could be removed by absorption with intact AKR MuLV, but not by absorption with Friend MuLV, a BALB/c xenotropic virus, or with NZB xenotropic virus. All the neutralizing activity of (B6C3)F1 mouse sera was associated with the immunoglobulin G fraction.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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