1. Tib neeg lub cev muaj ntau cov proteins sib txawv, ntawm cov collagen yog qhov siab tshaj ntawm 30%.2. Collagen muaj nyob txhua qhov chaw hauv tib neeg lub cev thiab yog cov khoom tseem ceeb ntawm cov ntaub so ntswg, tshwj xeeb tshaj yog nyob rau hauv daim tawv nqaij, cov leeg, ligaments, tendons, pob txha thiab pob qij txha.3. Sib...
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