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Procollagen III N-terminal propeptide (PIIINP) concentrations are elevated in patients with tuberculosis (TB). (A) PIIINP was measured by ELISA in induced sputum samples from human immunodeficiency virus (HIV) negative patients with pulmonary TB and uninfected controls. (B) Sputum PIIINP concentrations correlated with sputum MMP-1 concentrations measured by luminex array, on Spearman analysis.
