(b) Changes in cytokine transcript abundance in PRRSV-infected PAMs

Transcript	Function	RT-PCR	Normalized SAGE tag counts (per million tags)
			Mock	6	12	16	24
IL-6	Acute phase response, T- and B-cell growth & differentiation	↓	No tag in transcript
GM-CSF	Dendritic cell growth & differentiation	nd	4	3	1	0	4
TNF-α	Local inflammation, endothelial activation	nd	49	3	1	0	0
IL-1α	T-cell activation, macrophage activation	↓	152	31	23	16	40
Il-1β	T-cell activation, macrophage activation	↓	283	103	31	52	163