7Bonham M, O'connor J M, Hannigan B M,et al. The immune system as a physiological indicator of marginal copper status? [J] British Journal of Nutrition,2002,87:393-403.
8Percival S S. Copper and immunity [J]. American Journal of Clinical Nutrition, 1998,67: 1064s-1068s.
9Auza N J, William G D, Michael J M, et al. Diagnosis and treatment of copper toxicosis in ruminants [J].Journal of the American Veterinary Medical Association,1999,214:1624-1628.
10Brewer N R. Comparative metabolism of copper[J].Journal of the American Veterinary Medical Association, 1987, 190:654-658.
