title: Chemotherapy and radiotherapy resistance: complexity, reality, and promise.
authors.forename: Jaffer A
authors.initials: JA
authors.lastname: Ajani
authors.forename: Julie G
authors.initials: JG
authors.lastname: Izzo
authors.forename: Ju-Seog
authors.initials: JS
authors.lastname: Lee
mesh_terms: D001005:Anus Neoplasms / Q000628:therapy*; D003131:Combined Modality Therapy; D019008:Drug Resistance, Neoplasm; D006801:Humans; D011836:Radiation Tolerance