PubMed:9730996 / 603-832 JSONTXT

{"project":"Inflammaging","denotations":[{"id":"T5","span":{"begin":0,"end":229},"obj":"Sentence"},{"id":"T5","span":{"begin":0,"end":229},"obj":"Sentence"}],"text":"At each visit, spirometry, 24-h sputum volume, sputum leukocyte density, bacterial densities, and concentrations of interleukin (IL)-1beta, IL-8, tumor necrosis factor-alpha (TNF-alpha), and leukotriene B4 (LTB4) were determined."}