Fibrocytes are circulating mesenchymal progenitor cells that participate in tissue responses
to injury and invasion. Accumulating knowledge from animal models regarding the
differentiation, trafficking, and function of these cells implicates them in the development of
diseases characterized by chronic inflammation and excessive collagen deposition. Recent
data obtained from the clinical setting suggests that the enumeration of circulating fibrocytes
may be a biomarker for disease progression in chronic lung diseases including asthma and …