Which of the following represents an amino-sugar?
1. Ascorbic acid
2. Mannitol
3. Glucuronic acid
4. Glucosamine 
Subtopic:  Carbohydrates: Introduction | Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
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