definiens: shall mean : ( a ) a polynucleotide sequence corresponding to a sequence identified in a publicly available curated database such as GenBank ® by means of an accession number or similar sequence information that uniquely identifies that sequence ; together with : ( i ) all variants of the identified sequence in man and other species known and demonstrated to Medlmmune or [COMPANY] ( as the case may be ) at the time of submission to the Medlmmune Gatekeeping Procedure or to [COMPANY] ( as the case may be ) to have functional equivalence to ( a ) ; and ( ii ) all post - transcriptional material encoded by ( a ) and ( i ) ( including splice variants ) ; and ( iii ) all post - translational material encoded by such post - transcriptional material ; and ( iv ) all multimeric forms of ( iii ) irrespective of whether homomeric or heteromeric ; and ( v ) where any of ( iii ) or ( iv ) is known to form a heteromeric complex with one or more non­identical subunits, that heteromeric complex must be identified in its entirety at he time of submission to the Medlmmune Gatekeeping Procedure or to [COMPANY] ( as the case may be ) using such accession numbers of a publicly available curated database entry as correspond to each of the component subunits ; or ( b ) a non - proteinaceous antigen that is uniquely identifiable in a routine manner using publicly available curated databases and/or such other suitable written material as is available