title: Breast cancer heterogeneity: a mixture of at least two main types?
authors.forename: William F
authors.initials: WF
authors.lastname: Anderson
authors.forename: Rayna
authors.initials: R
authors.lastname: Matsuno
mesh_terms: D017677:Age Distribution; D000367:Age Factors; D000818:Animals; D014408:Biomarkers, Tumor / Q000032:analysis*; D001943:Breast Neoplasms / Q000737:chemistry* / Q000453:epidemiology; D015536:Down-Regulation; D066246:ErbB Receptors / Q000032:analysis*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D015994:Incidence; D008321:Mammary Glands, Animal / Q000737:chemistry*; D051379:Mice; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000032:analysis*; D011960:Receptors, Estrogen / Q000032:analysis*; D011980:Receptors, Progesterone / Q000032:analysis*; D018426:SEER Program; D013234:Stem Cells / Q000737:chemistry*; D014481:United States / Q000453:epidemiology; D015854:Up-Regulation
chemical_list: D014408:Biomarkers, Tumor; D066246:ErbB Receptors; D018719:Erb-b2 Receptor Tyrosine Kinases; D011960:Receptors, Estrogen; D011980:Receptors, Progesterone