title: Optimizing sputum methodology.
authors: E M
authors: EM
authors: Erin
authors: P J
authors: PJ
authors: Barnes
authors: T T
authors: TT
authors: Hansel
mesh_terms: D001249:Asthma / Q000473:pathology; D001798:Blood Proteins / Q000032:analysis; D002469:Cell Separation / Q000379:methods* / Q000592:standards; D002470:Cell Survival / Q000502:physiology; D004804:Eosinophils / Q000737:chemistry / Q000201:enzymology; D006801:Humans; D015848:Interleukin-5 / Q000032:analysis; D016209:Interleukin-8 / Q000032:analysis; D009195:Peroxidase / Q000032:analysis; D029424:Pulmonary Disease, Chronic Obstructive / Q000473:pathology; D015203:Reproducibility of Results; D013183:Sputum / Q000737:chemistry / Q000166:cytology*
chemical_list: D001798:Blood Proteins; D015848:Interleukin-5; D016209:Interleukin-8; D009195:Peroxidase