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. 2012 Jul 25;3(3):113–119. doi: 10.1159/000341375

Table 2.

Enzymatic activities of respiratory chain complexes measured from the muscle tissue of patients

Complex I mU/UCS Complex II+III mU/UCS Complex IV mU/UCS Citrate synthase mU/mg
Case 1 4 101 48 470
Case 2 28 51 58 118
Reference range 84–559 37–285 520–2080 45–187

UCS = Unit of citrate synthase.