Uptake of some quaternary ammonium ions by human erythrocytes.
D002247:Carbon Isotopes; D002794:Choline / Q000378:metabolism*; D004912:Erythrocytes / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000378:metabolism*; D011874:Radiometry
D002247:Carbon Isotopes; D000644:Quaternary Ammonium Compounds; D002794:Choline