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Abstract
The β-Galactosidase activity at pH 6 is used as a cellular marker to identify senescent cell cultures. The classic method to identify this enzymatic activity is using cytochemical staining with X-Gal after 16 hrs. In this work, a differential pH sensor was used to measure β-Galactosidase activity at pH 6. The measurement is easy and only takes 3 min.
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