Figure 1. SOD2 levels were quantified in the whole cell extract from three different cell lines; HepG2, HeLa and HDFN cells all grown in glucose as well as HepG2 cells grown in galactose. A striking difference is seen in expression levels, this difference is confirmed in Western blotting. This difference may be due to increased mitochondrial respiratory chain activity in HepG2 galactose grown cells and a resulting need for more antioxidant enzyme activities.

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