J. A. Hall, Van Saun, R. J., Tornquist, S. J., Gradin, J. L., Pearson, E. G., and Wander, R. C.,
“Effect of type of dietary polyunsaturated fatty acid supplement (corn oil or fish oil) on immune responses in healthy horses.”,
J Vet Intern Med, vol. 18, no. 6, pp. 880-6, 2004.