{HEAD ~ Another embodiment} of the invention provides {TAIL ~ a method} of generating an immune response in an animal comprising administering one or more purified polypeptides having at least 95% identity to SEQ ID NOs:22 33 or a combination thereof to the animal, wherein the one or more purified polypeptides generate an immune response in the animal 
{ HEAD ~ Another embodiment } of the invention provides { TAIL ~ a method } of generating an immune response in an animal comprising administering one or more purified polypeptides having at least 95 % identity to SEQ ID NOs:22 33 or a combination thereof to the animal , wherein the one or more purified polypeptides generate an immune response in the animal
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