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Biology, 19.09.2019 10:30 shukriabdisabrie
In the early 1930’s william rose fed laboratory rats a mixture of all 19 amino acids known to be present in proteins. he observed that his rats lost weight. this observation led to the discovery of as the 20th amino acid found in proteins.
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In the early 1930’s william rose fed laboratory rats a mixture of all 19 amino acids known to be pre...
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