title: Changes in cellular immunity in patients with head and neck cancer undergoing radiotherapy.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D006258:Head and Neck Neoplasms / Q000276:immunology / Q000532:radiotherapy*; D006801:Humans; D007111:Immunity, Cellular; D007958:Leukocyte Count; D012882:Skin Tests; D013601:T-Lymphocytes / Q000276:immunology