Figure 1From: Comparison of the expression of cytokine genes in the bursal tissues of the chickens following challenge with infectious bursal disease viruses of varying virulenceChanges in virus load in the bursa tissues of chickens infected with either H or Ts strain. Changes of IBDV load in the bursa were quantified by real-time PCR and presented as ratios of IBDV/GAPDH mRNA. The means and standard errors (SE) are from three separate experiments. dpi: days past-infection. A: H strain; B: Ts strain.Back to article page