Expression of YKL-40 and MIP-1a proteins in exudates and transudates: Biomarkers for differential diagnosis of pleural effusions? A pilot study

YKL-40 is an extracellular matrix glycoprotein with a significant role in tissue inflammation and remodeling. MIP-1a has chemotactic and pro-inflammatory properties, and is induced by YKL-40 in several lung disorders.