Patent ID: 7133544

Claim:
A method for identifying a polypeptide in a sample from a mammal of a randomly breeding population, comprising: (a) characterizing said polypeptide by isoelectric point; (b) characterizing said polypeptide by molecular weight; and (c) identifying tissues of said subject where said polypeptide is found, wherein at least 5 tissues are examined, to yield distinguishing parameters of said polypeptide comprising isoelectric point, molecular weight and tissue distribution; (d) comparing said distinguishing parameters of said polypeptide with distinguishing parameters of previously tested polypeptides of a set; and (e) determining whether a previously tested polypeptide of said set has said distinguishing parameters of said polypeptide, wherein said polypeptide is identified as being said previously tested polypeptide when said distinguishing parameters of said polypeptide match the parameters of said previously tested polypeptide, or adding said polypeptide and said distinguishing parameters to said set when said distinguishing parameters of said polypeptide are unique to said set.