5Green LC, Wagner DA, Glogowski J, et al. Analysis of nitrate, nitrite, and [ N 15 ] nitrate in biological fluids [J ]. Anal Biochem, 1992, 126:131 - 138.
6Witter JP,Balish E,Gatley SJ. Distribution of nitrogen-13 from labeled nitrate and nitrite in germfree and conventional-flora rats [J]. Appl Environ Microbiol, 1979,38(5) : 870 - 878.
7Tsuchiya K, Kanematsu Y, Yoshizumi M, et al. Nitrite is an alternative source of NO in vivo[J] .Am J Physiol Heart Circ Physiol, 2005,288 (5) : 2163 - 2170.
8Kohn MC, Melnick RL, Ye F, et al. Pharmacokinetics of sodium nitrite-induced methemoglobinemia in the rat[J] .Drug Metab Dispos, 2002, 30(6) :676 - 683.
