title: Nitrate and ammonium ion-selective electrodes as sensors. I. In bacterial growth curves for isolation of nitrate and nitrite reductases from Escherichia coli.
mesh_terms: D001431:Bacteriological Techniques; D004566:Electrodes; D004926:Escherichia coli / Q000201:enzymology*; D008722:Methods; D009247:NADH, NADPH Oxidoreductases / Q000302:isolation & purification*; D009565:Nitrate Reductases / Q000302:isolation & purification*; D009566:Nitrates; D009572:Nitrite Reductases / Q000302:isolation & purification*; D011199:Potentiometry; D000644:Quaternary Ammonium Compounds
chemical_list: D009566:Nitrates; D000644:Quaternary Ammonium Compounds; D009247:NADH, NADPH Oxidoreductases; D009565:Nitrate Reductases; D009572:Nitrite Reductases