title: The clonal nature of neoplasia.
authors.affiliation: Department of Pathology, University of Pennsylvania School of Medicine, Philadelphia 19104-6082.
authors.forename: P C
authors.initials: PC
authors.lastname: Nowell
mesh_terms: D002999:Clone Cells / Q000502:physiology; D006801:Humans; D009369:Neoplasms / Q000473:pathology*