TNF and infection: The presence of β2M, TGFβ,and TNFα transcripts were significantly upregulated in the blood at early time points during infection, usually between 2 and 4 dpi; while, p27 transcripts were increased at later time points during infection at 8 dpi, and finally IFNγ transcripts were significantly upregulated at both 4 and 8 dpi (Fig. 9a).