Notes. Observations of the effects driven by the stimulation of different TLRs, on mesenchymal stromal cells from different sources, on the gene and protein expression of proinflammatory cytokines: IL-1β, IL-6, IL-8, and TNF-α, gene and protein expression of anti-inflammatory factors: IDO1 (IDO), TGF-β1 (TGF-β), and PGE2, and the capacity to suppress the proliferation of lymphocytes (suppressive potential). ↑: increase; =: no alteration; ↓: reduction. Alterations of IDO expression levels or activity to induce tryptophan catabolism.