D9-PC
The time course of D9-PC (i.e., the sum of all measured molecular D9-PC species) concentrations in plasma is shown in Fig. D9-phosphatidylcholine (PC) concentrations (By contrast, the D9-PC to D9-betaine ratio was higher for D9-POPC compared to the water-soluble D9-choline compounds at 12 h, indicating preferential D9-PC formation at the expense of D9-betaine formation following D9-POPC (Fig. 