Файл:Alpha-ketoglutaric acid.pngDescriptionAlpha-ketoglutaric acid.png chemical structure of Alpha-ketoglutaric_acid Date 3 October 2007, 01:41 (UTC) Source Own work Author Edgar181
Файл:FijacionNitrogenoFotosintesis.pngFile:Nitrate-3D-balls.png de Benjah-bmm27. File:L-Glutamic-acid-3D-balls.png de Jynto. File:Ammonium-3D-balls.png de Benjah-bmm27. File:Alpha-Ketoglutaric acid model
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