title: Letter: Roles of the eosinophil.
mesh_terms: D000818:Animals; D004802:Eosinophilia / Q000209:etiology*; D004804:Eosinophils / Q000276:immunology / Q000502:physiology*; D006801:Humans; D007106:Immune Sera; D009369:Neoplasms / Q000276:immunology / Q000532:radiotherapy; D011878:Radiotherapy / Q000009:adverse effects
chemical_list: D007106:Immune Sera