1. Heterogeneity of tumor cells from a single mammary tumor;Dexter;Cancer Res.,1978
2. Intraneoplastic diversity;Dexter;Biochim. Biophys. Acta,1982
3. Clonal origin of human tumors;Fialkow;Biochim. Biophys. Acta,1976
4. Cellular tumorigenicity in nude mice: Correlation with cell growth in semisolid medium;Freedman;Cell,1974
5. Phenotypic variability in anchorage-independent growth by a human breast tumor cell line;Hancock;J. Natl. Cancer Inst.,1984