Please add spaces between words: Themodeofoperationseemstobethatarginineincreasesthebody'sproductionofthesignallingsubstanceNO(nitrogenoxide)whichincreasesthebloodflowandtherebycounteractsinfectedbloodcellsstickingtothevesselwalls.NOactsasasignallingsubstanceseveralplacesinthebody,bothinsmoothandcardiacmuscletissueandinthemalereproductiveorgan,wheretheendothelium(theinnerlayerofcellsinbloodvessels)produceNOfromarginineandoxygen.
The mode of operation seems to be that arginine increases the body's production of the signalling substance NO (nitrogen oxide) which increases the blood flow and thereby counteracts infected blood cells sticking to the vessel walls. NO acts as a signalling substance several places in the body, both in smooth and cardiac muscle tissue and in the male reproductive organ, where the endothelium (the inner layer of cells in blood vessels) produce NO from arginine and oxygen.