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  1. High Protein Foods: 16 Foods for High Protein Meals - Healthline

  2. Protein: What It Is, Types, Uses, Needs, Deficiency

  3. Protein - Wikipedia

  4. Protein | Definition, Structure, & Classification | Britannica

  5. High-protein foods: The best protein sources to include in a ...

  6. Protein – The Nutrition Source

  7. 9 Important Functions of Protein in Your Body - Healthline