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Proteins consist of one or more chains of amino acids, linked together by peptide bonds. There are 20 naturally occurring amino acids that make up the building blocks of proteins. Shorter chains of amino acids, generally less than 50, are called peptides. Insulin for example, consists of 51 amino acids, and is therefore borderline a peptide and a protein.电竞外围投注平台

英雄联盟下注软件



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