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. 1983 Nov;48(2):542–546. doi: 10.1128/jvi.48.2.542-546.1983

Molecular cloning of Friend mink cell focus-inducing virus: identification of mink cell focus-inducing virus-like messages in normal and transformed cells.

A Oliff, L Collins, C Mirenda
PMCID: PMC255378  PMID: 6312107

Abstract

Friend mink cell focus-inducing virus (Fr-MCF) is a leukemogenic murine retrovirus that was isolated from a leukemic NIH Swiss mouse. We molecularly cloned the genome of this virus into pBR322. Restriction enzyme mapping of this cloned Fr-MCF DNA revealed a 1.0-kilobase-pair region in the envelope gene which differs from the restriction map of the Friend ecotropic virus (Friend murine leukemia virus). A 400-base-pair Fr-MCF envelope gene fragment was subcloned from this region and designated pLEK. Probes made with pLEK hybridize to Fr-MCF DNA but do not hybridize to either Friend or amphotropic murine leukemia virus DNA. Polyadenylic acid-selected RNA was prepared from the hematopoietic tissues of normal NIH Swiss mice, Fr-MCF-infected erythroleukemia cells (TP-1), and uninfected chemically transformed T lymphocytes (RB-1). The pLEK probe identified 34S and 22S messages in the TP-1 cells and in the normal hematopoietic tissues. RB-1 cells contain 32S and 26S messages that hybridize to pLEK. However, the pLEK-like RNAs found in the normal hematopoietic tissues and in the RB-1 cells were 400-fold less abundant than the RNAs found in the TP-1 cells.

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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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