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Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?
Explanation
Eli Lilly used Escherichia coli (a bacterium) to produce chains A and B of human insulin.
Detailed Solution
In 1983, Eli Lilly synthesized DNA sequences corresponding to chains A and B of human insulin and introduced them into plasmids of the bacterium Escherichia coli to produce Humulin.