definiens: means any modified or derivative form of an [COMPANY] RSV Antibody ( includingan scFv or Fab ) created by or on behalf of [COMPANY] or its Licensees or the Foundation, including any fragment orpegylated version ( whether or not including amino acid changes ) of an [COMPANY] RSV Antibody and including chemicallymodified versions ( including associated amino acid substitutions ) of an [COMPANY] RSV Antibody, and including anantibody designed or derived using the Sequence of any [COMPANY] RSV Antibody, polynucleotide encoding it, and anycell line or cellular or bacterial expression system or vector expressing any [COMPANY] RSV Antibody or incorporating thepolynucleotide encoding an [COMPANY] RSV Antibody . For clarity, any modified or derivative form of any [COMPANY] DerivedAntibody shall itself be an [COMPANY] Derived Antibody