Correct option is D
Recombinant proteins are proteins that are produced using recombinant DNA (rDNA) technology, where a gene encoding the desired protein is inserted
• Allows mass production of human proteins without needing human donors.
• Widely used in biopharmaceuticals and vaccine production.
• Insulin (Humulin) was the first FDA-approved recombinant protein in 1982.
• Recombinant proteins are highly pure, scalable, and specific.
• The process avoids reliance on animal or human tissues.
• Also used in gene therapy, diagnostics, and industrial enzymes.