Abstract
Cell culture, the process of growing cells in conditions that mimic those in the body, is a key technique in biomedical research. Oxygen is not controlled in conventional cell culture, although chambers that control oxygen in the surrounding gas phase are commercially available. In both cases, it is valuable to understand the pericellular oxygen tension (i.e., the oxygen concentration that cells experience) in cultures. Herein we describe a procedure for using commercial optical sensor spots to measure pericellular oxygen for adherent and suspension cultures. Spots are placed on surfaces on which cells are grown, and optical cables are attached to the outside of the cell culture vessels and connected to a computer. Associated software allows for the real-time monitoring of pericellular oxygen during cell culture experiments. This procedure enhances the reproducibility and control of cell culture.
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