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Abstract

Phosphatidylcholine (PC) is a phospholipid, one of a primal class of substances ubiquitous among life forms.1 PC is the predominant phospholipid of all cell membranes and of the circulating blood lipoproteins. It is the main functional constituent of the natural surfactants, and the body’s foremost reservoir of choline, an essential nutrient.2 PC is a normal constituent of the bile that facilitates fat emulsification, absorption, and transport, and is recycled via enterohepatic circulation. Until recently the nomenclature of PC was confused with lecithin, a complex mixture of phospholipids and other lipids. Lecithin preparations enriched in PC at or above 30 percent by weight are considered PC concentrates

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