https://www.mglur.com/2017/03/28/no-amount-in-liver-was-estimated-by-utilizing-griess-reagent-100l-of-liver-homogenate-was-combined-with-100l-of-griess-reagent-1-naphthylethylenediamine-dihydrochloride-and-1-sulfanilamide-in-5-pho/