Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2180-2-30/MediaObjects/12866_2002_Article_64_Fig6_HTML.jpg)
Degradation of 125I-fibrinogen by M. tuberculosis culture filtrates and inhibition by class-specific protease inhibitors. Culture filtrates were concentrated 20-fold and incubated with 125I-fibrinogen for 16 h. Class specific protease inhibitors (defined in the text) were added to the protease assays, which were performed as described in the Methods. Extent of 125I-fibrinogen degradation was quantified by measurement of TCA-soluble counts. Results are expressed as percent degradation relative to control (no inhibitor) and are the means ± standard deviations of four independent experiments.