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There are many different kinds of Phosphatidylcholines (PC). There are PCs that contain saturated fatty acid chains which will have a detrimental effect on cell membranes and blood vessel walls. And there are PCs that contain one saturated and one unsaturated fatty acid chain, which is not a beneficial form of PC either. Only PC with unsaturated fatty acid chains (linoleic acid) has the benefits described below. It is called polyenylphosphatidylcholine or dilinoleoylphosphatidylcholine, DLPC.