FEE C J: "SIZE-EXCLUSION REACTION CHROMATOGRAPHY (SERC): A NEW TECHNIQUE FOR PROTEIN PEGYLATION", BIOTECHNOLOGY AND BIOENGINEERING, WILEY & SONS, HOBOKEN, NJ, US, vol. 82, no. 2, 1 February 2003 (2003-02-01), pages 200-206, XP002322425, ISSN: 0006-3592, DOI: 10.1002/BIT.10561 (B1)

J.R. MOLEK ET AL: "Separation of PEGylated [alpha]-Lactalbumin from Unreacted Precursors and Byproducts Using Ultrafiltration", BIOTECHNOLOGY PROGRESS., vol. 23, no. 6, 7 December 2007 (2007-12-07), pages 1417-1424, XP055242430, US ISSN: 8756-7938, DOI: 10.1021/bp070243w (B1)

KRISHNASWAMI RAJA ET AL: "One-Pot Synthesis, Purification, and Formulation of Bionanoparticle-CpG Oligodeoxynucleotide Hepatitis B Surface Antigen Conjugate Vaccine via Tangential Flow Filtration", BIOCONJUGATE CHEMISTRY., vol. 18, no. 2, 1 March 2007 (2007-03-01), pages 285-288, XP055242933, US ISSN: 1043-1802, DOI: 10.1021/bc060118q (B1)

T. TAKAKURA: "Physicochemical and Pharmacokinetic Characterization of Highly Potent Recombinant L-Methionine -Lyase Conjugated with Polyethylene Glycol as an Antitumor Agent", CANCER RESEARCH, vol. 66, no. 5, 1 March 2006 (2006-03-01), pages 2807-2814, XP55242686, US ISSN: 0008-5472, DOI: 10.1158/0008-5472.CAN-05-3910 (B1)

WO-A2-2011/077309 (B1)

US-A1- 2005 175 619 (B1)

US-A1- 2007 173 634 (B1)

US-A1- 2009 286 955 (B1)

US-B2- 7 384 909 (B1)

TAO HU ET AL: "Influence of the chemistry of conjugation of poly(ethylene glycol) to Hb on the oxygen-binding and solution properties of the PEG-Hb conjugate", BIOCHEMICAL JOURNAL, vol. 392, no. 3, 15 December 2005 (2005-12-15), pages 555-564, XP55242116, ISSN: 0264-6021, DOI: 10.1042/BJ20050663 (B1)