• Pulmonary nitric oxide in mountain dwellers 

      Beall, Cynthia M; Laskowski, Daniel; Strohl, Kingman; Soria, Rudy; Villena, Mercedes; Vargas, Enrique; Alarcón, Ana María; Gonzales, Cristina; Erzurum, Serpil C (NATURE, 2001-11-22)
      Nitric oxide is synthesized in the lungs to help regulate blood flow, and its levels have been found to drop in species native to low altitudes, including humans, upon acute exposure to reduced oxygen concentration1–3. ...