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Chemical nature of the molecule

Briefly explain regarding the chemical nature of the molecule, that makes a substance antigenic.

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Most naturally, taking place antigens are polysaccharides and proteins. Lipids and nucleic acids are very less antigenic. The antigenic property of such compounds is improved by combination with proteins.

Certain degree of structural complication is needed for antigenesity. Synthetic polymers are macro-molecules in size are not antigenic since they lack structural complexity. Example: Gelatin

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