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Fig. 2 | Virology Journal

Fig. 2

From: Expression of chicken interleukin-2 by a highly virulent strain of Newcastle disease virus leads to decreased systemic viral load but does not significantly affect mortality in chickens

Fig. 2

Multi-step growth kinetics of rZJ1-IL2, rZJ1-GFP, and rZJ1 in immortalized chicken fibroblast cell line (DF-1, panel a), and immortalized chicken macrophage cell line (HD-11, panel b). DF-1 and HD-11 cells were infected with each virus at a MOI = 0.01. At each time point, samples of supernatant were collected and titered by limiting dilutions in DF-1 cells (expressed as TCID50 / ml). Results show that there are not significant differences (Two-way ANOVA) in the growth of the three viruses in either cell line. Bars represent standard error (SE), n = 3

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