IL-1β secretion showed a trend in reduction in spontaneous and stimulated whole blood assay of IL10KO/IL37tg mice ( Figure 2B ).
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Other pro-inflammatory cytokines as IL-1β, IL-17a, IFNγ, and TNFα were also lower but did not reach statistical significance, indicating that IL-37 contributes to an anti-inflammatory microenvironment within the colon.