Abstract: The present invention relates to Salmonella bacteria. The invention also relates to methods of using Salmonella bacteria, including in vaccines based thereon that are useful for the prevention of microbial pathogenesis. Further, the invention relates to the use of such bacteria or the manufacture of such vaccines. The invention also relates to methods for the preparation of such vaccines.

Abstract: The present invention relates to nucleic acids encoding Ornithobacterium rhinotracheale proteins, to DNA fragments, recombinant DNA molecules, live recombinant carriers and host cells comprising such nucleic acids, to Ornithobacterium rhinotracheale proteins, to antibodies against such proteins, to such proteins for use in vaccines, to the use of such proteins in the manufacturing of such vaccines, to vaccines comprising such nucleic acids, DNA fragments, recombinant DNA molecules, live recombinant carriers, host cells, proteins or antibodies against such proteins, and to methods for the preparation of such vaccines.

Abstract: The present invention relates to nucleic acid sequences encoding a 22.5 kD Streptococcus uberis protein and to parts of such nucleic acid sequences that encode an immunogenic fragment of such proteins, and to DNA fragments, recombinant DNA molecules, live recombinant carriers and host cells comprising such nucleic acid sequences or such parts thereof. The invention also relates to a 22.5 kD Streptococcus uberis protein and immunogenic parts thereof encoded by such sequences. Furthermore, the present invention relates to vaccines comprising such nucleic acid sequences and parts thereof, DNA fragments, recombinant DNA molecules, live recombinant carriers and host cells comprising such nucleic acid sequences or such parts thereof, proteins or immunogenic parts thereof and antibodies against such proteins or immunogenic parts thereof. Also, the invention relates to the use of said proteins in vaccines and for the manufacture of vaccines.

Abstract: An amplifier for use in, for example, Public Address Systems to send audio signals over long distances, is of the push-pull type and includes a first and a second switch and an output transformer having a primary winding coupled to the switches and a secondary winding coupled to the output of the push-pull amplifier. The output transformer further includes a further secondary winding coupled to a comparator as a feedback loop.

Abstract: Amplifiers are known and are for example used in Public Address Systems to send audio signals over long distances.