The present invention relates to flea serine protease and aminopeptidase proteins; to flea serine protease and aminopeptidase nucleic acid molecules, including those that encode such proteins; to antibodies raised against such proteins; and to compounds that inhibit flea serine protease and/or aminopeptidase...http://www.google.de/patents/US5972645?utm_source=gb-gplus-sharePatent US5972645 - Flea serine protease nucleic acid molecules
