[Electrometric titration of cholinephosphoric acid. Influence of Mg, Ca and Zn ions].
D002118:Calcium / Q000737:chemistry*; D002136:Calcium, Dietary; D002794:Choline / Q000031:analogs & derivatives; D007477:Ions; D008274:Magnesium / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
D002136:Calcium, Dietary; D007477:Ions; D010710:Phosphates; D008274:Magnesium; D015032:Zinc; D002794:Choline; D002118:Calcium
CALCIUM/chemistry; CHOLINE/related compounds; MAGNESIUM/chemistry; PHOSPHATES/chemistry; ZINC/chemistry