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  1. Collagen: What It Is, Types, Function & Benefits - Cleveland Clinic

  2. Collagen: The Important Differences Between Types 1, 2, and 3

  3. Collagen Types: The Important Differences Between I, II & III

  4. Why You Need Type I & III Collagen - Amy Myers MD

  5. Collagen Benefits: What You Need to Know - WebMD

  6. What Is Collagen? Health Benefits and Different Types - Dr. Axe

  7. Collagen Type 1 and 3 - National Nutrition Articles

  8. What Are the Differences Between Collagen Types 1, 2, and 3

  9. Understanding Collagen Types 1 & 3: Benefits and Differences

  10. Collagen supplements: Benefits, safety, and effects - Medical News Today