Figure 4. Comparison of the proportion of sera samples with detectable anti-inflammatory cytokines (IL-4, IL-10, and IL-13) and pro-inflammatory cytokines (IFN-γ, IL-1β, and TNF-α).

The proportion of sera with detectable anti-inflammatory and pro-inflammatory cytokines were determined following the analysis of sera from 44 ID-IBS, 16 PI-IBS, and 40 healthy volunteers using the Proteome Profiler Human Cytokine Array Panel A kit (R&D Systems, Minneapolis, MN).