title: Pre-analytical conditions for the assessment of circulating MMP-9 and TIMP-1: consideration of pitfalls.
authors.forename: M
authors.initials: M
authors.lastname: John
authors.forename: K
authors.initials: K
authors.lastname: Jung
mesh_terms: D001249:Asthma / Q000097:blood* / Q000150:complications; D001800:Blood Specimen Collection / Q000379:methods*; D006801:Humans; D020780:Matrix Metalloproteinase 9 / Q000097:blood*; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood* / Q000150:complications; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000097:blood*
chemical_list: D019715:Tissue Inhibitor of Metalloproteinase-1; D020780:Matrix Metalloproteinase 9