Purified recombinant polypeptides isolated from Chinese hamster ovary host cells, including antibodies, such as therapeutic antibodies, and methods of making and using such polypeptides are provided.L'invention concerne des polypeptides recombinants purifiés isolés de cellules ovariennes hôtes de hamster comprenant des anticorps, tels que des anticorps thérapeutiques, et des procédés de production et d'utilisation de ces polypeptides.