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. 2015 Nov 12;6:269. doi: 10.3389/fphar.2015.00269

FIGURE 3.

FIGURE 3

Microbe-derived histamine mediated suppression of pro-inflammatory cytokines. TNF is suppressed by inhibition of the MEK/ERK pathway in myeloid cells. H2HR, histamine receptor 2; PKA, activated protein kinase A; TNF, tumor necrosis factor; TLR, toll-like receptor. Adapted from Thomas et al. (2012).