Abstract: Ehrlichia canis antigens that can be used to differentiate E. canis infected animals from animals that have been challenged with E. canis, e.g., vaccinated against E. canis, are disclosed. The invention also provides compositions and methods for determining the presence of E. canis antigens and antibodies.

Abstract: The invention provides compositions and methods for the detection and quantification of PRRSV antibodies and antibody fragments using polypeptides.

Abstract: Isolated nucleic acid molecules having a nucleotide sequence encoding canine pancreatic lipase polypeptides, allelic variants and fragments thereof. Vectors and host cells containing the polynucleotide sequences and methods for expressing the polypeptides. Monoclonal antibodies that specifically binds to the canine pancreatic lipase polypeptides. Cell lines secreting the monoclonal antibodies. Methods for determining the presence or amount of canine pancreatic lipase in a biological sample. The methods include using the monoclonal antibodies to specifically bind to canine pancreatic lipase polypeptides. The method includes using standards of recombinant canine pancreatic lipase. Devices and kits for performing methods for detecting canine pancreatic lipase in biological samples.