The lack of binding ability of staphylococcal protein A and streptococcal protein G to egg yolk immunoglobulins of different fowl species (short communication).

The binding ability of staphylococcal protein A (SpA) and streptococcal protein G (SpG) to egg yolk antibodies of four fowl species (turkey, duck, moskovy duck and goose) was studied and compared with the binding ability to three serum antibodies from chicken, horse and cattle. SpA and SpG were not able to bind to any of the avian immunoglobulins.