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Composition of extracellular matrix (ECM) of biofilm. ECM of biofilm comprises of glycoproteins (55%), carbohydrates (25%), lipids (15%), and nucleic acid (5%). Glycerolipids (99.5%) and sphingolipids (0.5%) are the different classes of lipids present in the ECM. Glycerolipids contain a mixture of neutral lipids and polar lipids.
