title: Expression of the int-1 and int-2 loci in endogenous mouse mammary tumor virus-induced mammary tumorigenesis in the C3Hf mouse.
abstract: The int-1 locus appears to be involved in over 80% of C3H exogenous mouse mammary tumor virus (MMTV)-induced mouse mammary tumors, and the int-2 locus appears to be involved in approximately 10% of these tumors. Analysis of 46 C3Hf mammary tumors resulting from endogenous, rather than exogenous, MMTV infection revealed that only 41% expressed int-1 RNA, while 2% expressed int-2 RNA. Our results suggest that in addition to the int-1 and int-2 loci, other loci may be involved in endogenous-MMTV-induced mammary tumors of the C3Hf mouse.
authors.affiliation: Department of Medicine, Montefiore Medical Center, Bronx, New York 10467.
authors.forename: P R
authors.initials: PR
authors.lastname: Etkind
mesh_terms: D000818:Animals; D004273:DNA, Neoplasm / Q000235:genetics*; D004279:DNA, Viral / Q000235:genetics* / Q000302:isolation & purification; D015870:Gene Expression; D005814:Genes, Viral; D008325:Mammary Neoplasms, Experimental / Q000235:genetics / Q000382:microbiology*; D008324:Mammary Tumor Virus, Mouse / Q000235:genetics* / Q000302:isolation & purification; D051379:Mice; D008809:Mice, Inbred C3H; D014158:Transcription, Genetic
chemical_list: D004273:DNA, Neoplasm; D004279:DNA, Viral