1.   The quality of nitrogen supply in foodstuffs is generally assessed by nutritional indices such as gain in body weight and how effectively protein is digested.

2.   Because buckwheat has no gluten, it is excellent for people with a problem digesting this protein.

3.   For example, the vesicles could be used to study how enzymes called proteases act to digest foreign proteins, Whitesides said.

4.   Homocysteine, an amino acid, is produced as the body digests protein.

5.   He had grown so weak, Gray said, he could barely walk and was unable to eat or digest protein.

6.   The protease is an enzyme that digests proteins.