Patent 8343487 was granted and assigned to Halozyme, Inc. on January, 2013 by the United States Patent and Trademark Office.
Provided are methods for preparing culture medium that contains soluble hyaluronidases. The methods employ cells that contain a plurality of active copies of nucleic acid encoding the soluble hyaluronidase and a plurality of feedings and temperature changes, whereby the encoded soluble hyaluronidase is secreted into the cell culture medium.