title: Tumour heterogeneity and clonality--an old theme revisited.
authors.affiliation: Institute of Medical Oncology, Inselspital, Bern, Switzerland.
authors.forename: M F
authors.initials: MF
authors.lastname: Fey
authors.forename: A
authors.initials: A
authors.lastname: Tobler
mesh_terms: D014408:Biomarkers, Tumor / Q000235:genetics; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D002999:Clone Cells; D018740:Genetic Heterogeneity; D005819:Genetic Markers; D006801:Humans; D009369:Neoplasms / Q000235:genetics* / Q000473:pathology
chemical_list: D014408:Biomarkers, Tumor; D005819:Genetic Markers