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Faraji, B.,Kang, H.K., Valentine, J.L., Methods compared for determining glutathione peroxidase activity in blood, Clin.Chem

[1] [14] However, this doesn't mean all doses are completely without risk of adverse effects or interactions (for example, chloramphenicol may reduce the haematological response to B12)

Circ Res 121(3):e2e8

doi: 10.1023/a:1006966318403 170 ChristenWGGlynnRJSessoHDKurthTMacFadyenJBubesVet al

doi:10.1016/j.urolonc.2008.10.019 (2009)

In this study, metformin did not alter oxidative phosphorylation or glycolysis in normal non-cancer rectal tissue biopsies, importantly suggesting that the anti-metabolic effects of metformin may be tumour tissue-specific, which supports its potential utility as a radiosensitiser in rectal cancer