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Golubovic, M. (author), Ottens, M. (author), Witkamp, G.J. (author), Van der Wielen, L.A. (author)The invention relates to a method of preparing a protein aggregate, wherein an aqueous protein solution is acidified with a pH that lies above the isoelectric point of the protein. In accordance with the invention, a first protein, which through acidificaiton is able to form a protein aggregate, is acidified in the presence of a second protein...patent 2005