Figure 4
From: Functional Proteomic Profiling of Secreted Serine Proteases in Health and Inflammatory Bowel Disease

Colonic RNA expression for proteases identified as active. Analytical agarose-gel electrophoresis of RT-PCR products amplified from cDNAs prepared from human colonic mucosa tissue samples are shown with arrows denoting the predicted size (base pairs: bp) of the PCR product. Negative controls (noted -) consisted of RT reactions performed in the absence of enzyme. Positive expression was confirmed using cDNAs prepared from human tissue sources known to express the target proteases.