Fig. 2From: Fibrocyte measurement in peripheral blood correlates with number of cultured mature fibrocytes in vitro and is a potential biomarker for interstitial lung disease in Rheumatoid ArthritisMature and circulating fibrocytes. Appearance of fibrocytes in a PBMCs cultured for 5 days in serum free medium; giemsa stain. b Cultured PBMCs. The arrow points at a pro-collagen type 1 positive cell. c Pro-collagen type 1 positive CD45+CD34+CD11b+ sorted cell from an RA patient. d Cultured fibroblast used as positive control for the pro-collagen type 1 stain. e IgG isotype control. The scale bar represents 100 μmBack to article page