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American journal of physiology. Regulatory, integrative and comparative physiology  (2005)

Vasodilator tone in the llama fetus: the role of nitric oxide during normoxemia and hypoxemia.

Sanhueza, Emilia M; Riquelme, Raquel A; Herrera, Emilio A; Giussani, Dino A; Blanco, Carlos E; Hanson, Mark A; Llanos, Aníbal J