ptdser caused a concomitant , concentration-dependent increase of up to twofold in the incorporation of [ methyl-14c ] choline chloride into ptdcho at a choline concentration ( 8.5 microm ) compatible with activation of the cdp-choline pathway , suggesting that the levels of ptdser in membranes may serve as a stimulus to regulate overall membrane composition .
C0008409
choline chloride
C0008405
choline