R. C. Wander, Hall, J. A., Gradin, J. L., Du, S. H., and Jewell, D. E.,
“The ratio of dietary (n-6) to (n-3) fatty acids influences immune system function, eicosanoid metabolism, lipid peroxidation and vitamin E status in aged dogs.”,
J Nutr, vol. 127, no. 6, pp. 1198-205, 1997.