Abstract: The present invention relates to immunoconjugates from egg-yolk antibodies (IgY), their production and application in diagnostics and therapy. It is an object of the present invention to propose alternative products to conventional immunoconjugates for diagnostic and therapeutic use. The immunoconjugates in accordance with the invention are superior to monoclonal antibodies and immunosera from mammals, as well as to the IgY compounds from conventional chickens, in respect of purity and antigen targeting. The production of human anti-IgY-antibodies is to be avoided if possible, and the immunoconjugates are to be producible economically in a manner doing justice to animal protection and in large quantities. In accordance with the invention, the object is accomplished by polyclonal IgY conjugates from intact egg-yolk antibodies (IgY), IgY fragments, Fab constructs or humanized egg-yolk antibodies from SPF-chickens, preferably transgenic SPF-chickens.

Abstract: A composition for pharmaceutical products and cosmetic products contains IgY egg yolk antibodies of SPF hens and microalgae extracts from Spirulina species, Spirulina varieties, and Chlorella species. The composition can also contain oxytetracycline and preservatives or antioxidants. The composition prepared as a salve is used for healing infected wounds and for preventing the infection of wounds.

Abstract: The present invention is drawn to avian vitellin antibodies that are immunologically reactive with HIV antigens, a process for the preparation thereof, a use thereof and a food substance in the form of a hen's egg containing the antibodies. The antibodies of the present invention are produced by immunizing hens with HIV antigens, in particular HIV core antigens and concentrating the antibodies in the egg yolk. The antibodies are suitable for passive immunization of mammals.