Give scientific reasons: Viruses can be used in the manufacturing of proteins.

(N/A) Viruses act as efficient biological factories for the production of viral proteins. By utilizing recombinant $DNA$ technology,scientists can insert specific genes into viral vectors. When these modified viruses infect host cells,they hijack the host's machinery to express the inserted gene,leading to the mass production of desired proteins. This process is widely used in biotechnology for producing vaccines,therapeutic enzymes,and other pharmaceutical products.