Cetus Corporation

Andrea E Shauger

Brian L Maiorella

Duane Inlow

This invention is in the field of cell and/or tissue culture. In particular, this invention relates to methods which adapt cells to a desired phenotype by exposing the cells to high levels of ammonia in culture, and subsequently transferring the adapted cells to a new culture medium in which there is no initial level of ammonia or the initial level of ammonia is below the level to which cells have been exposed to during the adaptation process. In this new culture medium, the adapted cells express the desired phenotype of growing to a higher viable cell density, and/or remaining viable for a longer period of time, and/or producing more of a desired cell product than their non-adapted counterparts grown in the same medium. This invention includes the adapted cells produced thereby and their cell products.

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Albany, CA, United States of America

Andrea E Shauger