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Results for murine macrophage cells (P388-D1) incubated for 24 h with propolis extracts; (a) MTT assay; (b) SRB assay; ** p < 0.005; P1—propolis from Podlasie, P2—propolis from Masovia, P3—propolis from West Pomerania Province, EEP—ethanol extract of propolis, HEEP—hexane-ethanol extracts of propolis.
