The abstract for a study testing the effect of varying the ω-6 to ω-3 fatty acid ratio and source in diets on the immune response to E. coli lipopolysaccharide. Rectal temperature and area under curve (AUC) for the cytokine IL-1β showed no difference between diets. AUC for the cytokines IL-6, TNFα, and IL-8 was increased for the 5:1 plant treatment, but it is not yet clear if the increased response is beneficial or not.