to gain insights into the mechanisms leading to the increased density of fibroblasts and altered collagen metabolism in the ipf lung , bronchoalveolar lavage fluid from normal subjects and patients with ipf or sarcoidosis was analyzed for ( 1 ) the presence of antigenic material related to the aminoterminal propeptide domain of type iii procollagen , and ( 2 ) fibroblast growth-promoting activity in the extracellular milieu of the lower respiratory tract .
C0024109
lung
C1800706
ipf