definiens: means ( a ) a polypeptide that Targets one ( 1 ) or more antigen(s ), which polypeptidecomprises : ( i ) one or more immunoglobulin variable domains ; or ( ii ) fragments, variants, modifications or derivatives ofsuch immunoglobulin variable domains irrespective of origin or source, including but not limited to antigen bindingportions including Fab, Fab ’, F(ab’)2, fragment of a variable domain ( Fv ), diabody and CDR fragments, single chainantibodies ( scFv ), chimeric antibodies, monospecific antibodies, bispecific antibodies, multi - specific antibodies, diabodies and other polypeptides, any of which contain at least a portion of an immunoglobulin that is sufficient toconfer specific antigen binding to the polypeptide ; and ( iii ) in each case ( i ) and ( ii ) above, humanized or fully humanversions thereof or ( b ) any other [ * * * ] or [ * * * ] ( including [ * * * ] and [ * * * ] or [ * * * ] ) that [ * * * ]