DAO 23:109-114 (1995)  -  doi:10.3354/dao023109

Western blot analysis of the yolk extract of coho salmon eggs revealed the presence of an immunoglobulin-like protein molecule that reacted with antibodies specific for coho serum immunoglobulin (IgM). Sucrose gradient ultracentrifugation analysis of the yolk extract showed that the molecule 'sedimented' in a manner similar to bovine serum immunoglobulin IgG. This indicates that coho salmon eggs contain a low molecular weight form of serum IgM, perhaps a breakdown product, or a precursor of IgM. The precise function of the reported intra-ovum IgM-like protein is unknown.

IgM . Immunoglobulin . Salmonids . Eggs