title: Quantitative relations for the repression of nitrogenase synthesis in Azotobacter vinelandii by ammonia.
mesh_terms: D000114:Acetylene / Q000378:metabolism; D000641:Ammonia / Q000032:analysis / Q000494:pharmacology*; D001395:Azotobacter / Q000201:enzymology* / Q000254:growth & development; D002849:Chromatography, Gas; D004058:Diffusion; D004794:Enzyme Repression; D005030:Ethylenes / Q000096:biosynthesis; D009591:Nitrogenase / Q000096:biosynthesis* / Q000378:metabolism; D010084:Oxidation-Reduction; D010100:Oxygen
chemical_list: D005030:Ethylenes; D000641:Ammonia; D009591:Nitrogenase; D000114:Acetylene; D010100:Oxygen