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 {HEAD ~ 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 
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 { HEAD ~ 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
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH