A PROCESS AND A DEVICE FOR IMPROVED OXYGENATION OF BIOLOGICAL CULTURES

摘要

The present invention provides an improved method and apparatus for cultivating mammalian cells. The invention relates to reaction vessels having a mechanical stirrer therein. The improvement comprises supplying oxygen to the culture media in the vessel through at least one oxygen-permeable membrane which is located on the stirrer so that the oxygen permeable membrane provides enhanced oxygen transfer across the membrane which is in contact with the culture media. The method and apparatus provides improved oxygen transfer across the membrane in comparison to other devices in which the oxygen permeable membrane is not located on the stirrer.