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Fv-1 determinants in xenotropic murine leukemia viruses studied with biological assay systems: Isolation of xenotropic virus with N-tropic Fv-1 activity in the cryptic form.

By K Sakai, H Narita, A Adachi, S Tsuruta, T Yorifuji and A Ishimoto

Abstract

By a biological assay system using phenotypically mixed ecotropic and xenotropic murine leukemia viruses, we investigated whether in the virions of a xenotropic virus there is N- or B-tropic Fv-1 determinant in active form. The existence of N-tropic Fv-1 determinant was demonstrated in SL-XT-1 xenotropic virus isolated from the spleen of a 3-month-old SL mouse, and the N-tropic Fv-1 tropism was confirmed by analysis of the phenotypically mixed viruses harvested from clonal SC-1 cells doubly infected with the SL-XT-1 and B-tropic ecotropic viruses. However, neither N- nor B-tropic Fv-1 determinant was demonstrated in any xenotropic viruses isolated from embryo cells of BALB/c, NZB, or DBA/2 mice, or Cas E #1-IU, and xenotropic-like virus isolated from a wild mouse

Topics: Research Article
Year: 1982
OAI identifier: oai:pubmedcentral.nih.gov:256078
Provided by: PubMed Central
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