title: Evaluation of c-myc proto-oncogene in primary human breast carcinomas.
abstract: The expression of the c-myc proto-oncogene product was examined by immunohistochemistry in 11 normal breast tissues, 31 invasive and 14 non-invasive breast carcinomas. The c-myc product was detected in all breast carcinoma specimens and in seven of 11 normal breast tissues. Invasive tumors stained more frequently with the anti-myc monoclonal antibody (MAb) than non-invasive tumors, while the level of expression in normal breast tissue was much less than that in a breast cancer. Marked heterogeneity in the c-myc expression was seen among different tumors and within individual tumors. None of the eight invasive tumors with a high protein level of the c-myc showed evidence of gene amplification by Southern blot analysis.
authors.affiliation: Department of Pathology, College of Medicine, University of Cincinnati, Ohio 45267-0529.
authors.forename: Z P
authors.initials: ZP
authors.lastname: Pavelic
authors.forename: P
authors.initials: P
authors.lastname: Steele
authors.forename: H D
authors.initials: HD
authors.lastname: Preisler
mesh_terms: D000911:Antibodies, Monoclonal; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000235:genetics* / Q000473:pathology*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000235:genetics / Q000473:pathology; D004273:DNA, Neoplasm / Q000235:genetics; D005260:Female; D005784:Gene Amplification; D016259:Genes, myc; D006801:Humans; D007150:Immunohistochemistry; D009361:Neoplasm Invasiveness; D000090063:Proto-Oncogene Mas; D016271:Proto-Oncogene Proteins c-myc / Q000032:analysis*
chemical_list: D000911:Antibodies, Monoclonal; D004273:DNA, Neoplasm; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D016271:Proto-Oncogene Proteins c-myc