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Oxidative stress plays a prominent role in SARS-CoV-2 infection following recognition of the viral S-protein by angiotensin converting enzyme-2 receptor and pattern recognition receptors like toll-like receptors 2 and 4, and activation of transcription factors like nuclear factor kappa B, that subsequently activate nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) expression succeeded by ROS production

PLOS ONE 7, e39888

Studies document effects on 31.2% of human genes (approximately 4,000+ genes) with 50% expression change, suppressing RNA production in 70% of 54 genes overexpressed in metastatic colon cancer

Fruits and vegetables contain glutathione