Choline DeficiencyCholineEthioninePhosphatidylethanolamine N-MethyltransferaseGlycerylphosphorylcholinePhosphorylcholineBetaineMethionineLiverCholine KinasePhosphatidylcholinesS-AdenosylhomocysteineS-AdenosylmethionineEthanolaminesFolic AcidFatty LiverCholine O-AcetyltransferaseDietPregnancyRats, Sprague-Dawley