Fig. 2

IBV replication has a time-dependent activity in CEK cells. CEK cells were infected with IBV at an MOI of 1. At the indicated times post-infection, (a) viral RNA was quantified by RT-qPCR. Data are presented as the mean ± SD (* P ≤ 0.05; ** P ≤ 0.01); (b) The cellular IBV N proteins were quantified by Western blot. c The graph indicating the fold change of the N proteins. The fold change of N proteins is expressed as densitometric units (Image-Pro-plus 6.0) of bands normalized to the β-actin, results from three independent experiments