Effect of sodium nitrite (SN) treatment on blood pressure in normotensive (sham, n=10) and hypertensive mice induced by chronic infusion of angiotensin II (Ang II, n=10) or L-NAME treatment, n=10; *P < 0.05 for Ang II or L-NAME vs. Ang II + SN or L-NAME + SN; #P < 0.05 for Ang II and L-NAME vs. sham, sham + SN, L-NAME + SN, Ang II + SN; &P<0.05 for L-NAME + SN or Ang II + SN vs. sham with and without SN.