title: Heterogeneity and variability of test results as limiting factors for predictive assays.
mesh_terms: D000970:Antineoplastic Agents / Q000633:toxicity*; D001943:Breast Neoplasms / Q000473:pathology; D002470:Cell Survival / Q000187:drug effects; D003114:Colony-Forming Units Assay; D004353:Drug Evaluation, Preclinical / Q000379:methods*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000473:pathology*; D014410:Tumor Stem Cell Assay
chemical_list: D000970:Antineoplastic Agents