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. 2004 Mar;72(3):1358–1363. doi: 10.1128/IAI.72.3.1358-1363.2004

FIG. 3.

FIG. 3.

Cytokine protein levels in pleural fluids of control and anti-TGF-β1-treated guinea pigs. Total bioactive IFN (A) and TGF-β1 (B) protein levels in pleural exudates of guinea pigs were measured. Total IFN protein levels were analyzed by a bioassay, as described in Materials and Methods, and are expressed in units per total volume of fluid in the pleural space of each guinea pig. TGF-β1 protein levels were analyzed by an ELISA and are expressed in nanograms per total volume of fluid in the pleural space of each guinea pig. The bars indicate the means for three or four animals per day, and the error bars indicate the standard errors of the means. An asterisk indicates that there is a significant difference between the protein levels and the levels in the control animals.