Phospholipids Sub-categories Phosphatidyl Etanolamine (PE, LPE) Natural Phospholipids Phosphatidyl Acid (PA, LPA) Phosphatidyl Choline (PC, LPC) Phosphatidyl Inositol (PI, LPI) Phosphatidyl Serine (PS, LPS) Phosphatidyl Glycerol (PG, LPG) Other Phospholipids and Kits