IL4 and infection: In the first cultures after infection (6–13 dpi), the IFN-γ/IL-4 ratios were low, with mean values ranging between 2.3 ± 1.2 and 3.3 ± 2.8 in G1 and 5.3 ± 8.7 and 8.0 ± 5.1 in G2.