And the reason for this, it turned out, after two or three years' work, was that in the skin we have huge stores not of nitric oxide, because nitric oxide is a gas, and it's released --  -- and in a few seconds it's away, but it can be turned into these forms of nitric oxide -- nitrate, NO3; nitrite, NO2; nitrosothiols.
Après 2 ou 3 années de travail, il s’est avéré que la raison à cela, était que notre peau contient de gros stocks, non pas d’oxyde nitrique, parce que c’est un gaz et lorsqu’il est relâché – poof ! – et en quelques secondes il disparaît, mais il se trouve sous ces formes : nitrate NO3, nitrite NO2, thionitrites.