Collagen consists of amino acids wound together to sort triple-helices to type of elongated fibrils.[two] It is mostly present in fibrous tissues which include tendons, ligaments and skin.รับประทาน à¸à¹ˆà¸à¸™à¸à¸²à¸«à¸²à¸£à¹€à¸Šà¹‰à¸² หรืà¸