4Dalmo R A, Ingebrigtsen K, Bogwald J. Non-specific defence mechanisms in fish,with particular reference to the reticuloendothelial system (REB)[J]. J Fish Dis, 1997,20:241～273.
5Ellsaesser C F, Bly J E, Clem L W. Phylogeny of lymphocyte heterogeneity:The thymus of the channel catfish [J]. Dev Comp Immunol, 1998,12:787～799.
6Chen S C, Yoshida T,Adamsa,et al. Non-specific immune reponse of Nile tilepia, oreochronis nilotica,to the extracellular products of Mycobacterium spp and to various adjuvants[J]. Journal of Fish Diseases, 1998, 21:39～46.
7Dalmo R A, Seijelid R. Theimmunomodulatory effect of LPS,laminaran and sulphated laminaran[β(1,3)-D-glucan] on Atlantic salmon, Salmo salar L,macrophages in vitro[J]. Journal of Fish Diseases, 1995,18: 175～185.
8Gabrielsen B O. Growth product quality and immune status of Atlantic salmon,Salmo salar L,fed wet feed with alginate [J].Aquaculture Research, 1998,29:397～401.
9Siwicki A K, Anderson D P. Dietary intake of immunostimulants by rainbow trout affects non-specific immunity and proection against furunculo sis[J].Veterinary Immunology and Immunopath,1994, 41: 125～139.
