Figure 4From: The deletion of an extra six nucleotides in the 5′ -untranslated region of the nucleoprotein gene of Newcastle disease virus NA-1 decreases virulenceProtein synthesis in DF-1 cells infected with recombinant viruses. A. Western blot of NP and GAPDH proteins from rNA-1(−), rNA-1, and NA-1 virus-infected cells. B. Ratios of quantified NP protein to GAPDH protein levels from the rNA-1(−), rNA-1, and NA-1 strains (*, p < 0.05). Each bar shows the mean and standard error of the mean of triplicate samples.Back to article page