Table IVb.

Stimulation indices of relative neutrophil cytokine gene expression (mean RQ ± SE) 1 and 3 mo after dietary assignment in adult horses (n = 5 per group) receiving supplementary inorganic selenium (0.3 ppm DM, as sodium selenite), organic selenium (0.3 ppm DM, as Se yeast), or receiving no supplementary selenium (< 0.05 ppm DM)

Cytokine	No selenium	Inorganic selenium	Organic selenium
1 month
IL-1	0.596 (0)	4.702 (0)	0.639 (0.427)
IL-8	3.918 (0)	2.307 (2.143)	0.415 (0.282)
3 months
IL-1	1.481 (0.956)	0.768 (0.1258)	1.122 (0.808)
IL-8	0.563 (0.281)	1.840 (0.737)	1.219 (0.610)