Which of the following is an INCORRECT statement regarding the production of human insulin using recombinant DNA technology?
- AThe A and B chains are produced separately in E. coli.
- BThe A and B chains are extracted and combined by forming disulphide bonds.
- CProinsulin, with its C-peptide, is directly produced and then processed in E. coli.
- DThe C-peptide is not present in the mature functional insulin.
✓ Correct answer: C
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