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Induction of interleukin (IL)-2, IL-4, and interferon (IFN)-γ in Balb/c mice spleen cells stimulated with Brucella ovis subcellular fractions: A) outer membrane proteins (OMP); B) inner membrane proteins (IMP); and C) cytosol (CP). Culture supernatants were take out at different times and tested by enzyme-linked immunosorbent assay (ELISA)-Duoset. Standard deviations were below 10, and are not visible in the chart due to the scale.
