Genetic engineering human proteins through recombination

Human Insulin, Recombinant " " Human insulin was the first pharmacologically active biological macromol-eculc lo be produced through genetic engineering. The FDA approved the drug in 1982 for the treatment of type I (insulin-dependent) diabetes (.see Chapter 2S). The insulin protein is a two-chain polypeptide containing SI amino acid residues. Chain A is composed of 21 amino acid.s. and chain B con-... 

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