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A wide range of recent studies have indicated that organic nitrogen may be of great importance to plant nitrogen (N) nutrition. Most of these studies have, however, been conducted in laboratory settings, excluding important factors for actual plant uptake, such as competition, mycorrhizal associations and soil interactions. In order to accurately evaluate the importance of different N compounds to...
OBJECTIVE: We investigated the effects of an intravenous load of α-ketoglutaric acid, ammonium (NH 4+ ), and metabolic acidosis on plasma concentration and splanchnic and hindleg tissue exchange of glutamine, glutamate, alanine, and arginine in postabsorptive, anesthetized pigs.METHODS: Sixteen anesthetized piglets received a constant infusion of NH 4 Cl for 4 h and α-ketoglutaric...
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