Colon lining discharges hydrogen peroxide to shield the body from gut microorganisms Kumar Jeetendra | December 10, 2020 Scientists at UC Davis Health have discovered that an enzyme in the colon lining releases hydrogen peroxide (H2O2) – a known disinfecting chemical – to protect the body from gut microbes. Their study, published Dec. 9 in the journal Cell Host and Microbe, sheds light on the way microorganisms are spatially organized in the colon. …