Figure 1From: Determination of nitric oxide metabolites, nitrate and nitrite, in Anopheles culicifacies mosquito midgut and haemolymph by anion exchange high-performance liquid chromatography: plausible mechanism of refractorinessHPLC analysis of nitrite and nitrate. Chromatograms of an aqueous standard containing 25 μM nitrite and nitrate (A) and washed and spiked Anopheles culicifacies midguts obtained under control conditions (B) and Anopheles culicifacies haemolymph.Back to article page