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Effect of Eimeria spp. challenge and methionine supplementation on the expression of inducible nitric oxide synthase gene, iNOS in the jejunum of broilers 144 h post-inoculation. Results are expressed as arbitrary units, AU, and are presented as mean and standard error. UC = unchallenged broilers; EC = Eimeria-challenged broilers. NS = non-supplemented diet; dl-Met = diet supplemented with free methionine; dl-MMet = diet supplemented with methionine dipeptide
