Fig. 2From: Interferon-γ acts as a regulator in the trade-off between phagocytosis and production performance in dwarf chickensLevels of interferon-γ (IFN-γ) in dwarf chickens after IFN-γ injection in vivo (n = 30). Bars represent the mean ± standard error (SE). * indicates P < 0.05, ** indicates P < 0.01Back to article page