Propolis is known for its immunomodulatory properties. We investigated the effects of three recently developed propolis extract formulations: polar fraction (PPF), soluble dry (PSDE), and microencapsulated (MPE), some their components, on pro- anti-inflammatory cytokine production in a macrophage model. Bone marrow cell-derived macrophages (BMDM) cell culture were E. coli lipopolysaccharide (50...