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A completel protein is one which contains all the essential amino acids in sufficient amounts and in the right ratio to maintain a positive nitrogen balance. The egg is the most complete protein found in nature with an assimilability ratio of 94-96%. (Up to 96% of the protein in the egg will be used as protein.) 
- Donche, Dan (2008). FF Trainer Certification Guide. USA: Fatal Fitness.
- Gastelu, Dan; Hatfield, Frederick C (2006). Specialist in Performance Nutrition: The Complete Guide. Carpenteria, CA: ISSA, 17.