One argument in favor of producing alpha-1-antitrypsin in sheep is:

• A. It is cheaper than other methods
• B. It requires no ethical considerations
• C. It has no regulatory hurdles
• D. The product is produced in milk and can be obtained in large amounts

Answer: (D)

The main idea being tested is why using transgenic sheep to produce alpha-1-antitrypsin is advantageous for obtaining the protein. The strongest point is that the protein is produced in milk, which can be collected in large, regular quantities. Milk production is continuous and scalable, so each lactation period yields a substantial volume that can be processed to purify the human protein. This setup makes large-scale production more feasible than methods that produce smaller amounts or require more complex collection processes. While other considerations like overall cost, ethics, and regulatory issues exist, they don’t change the fundamental practicality that milk provides a readily accessible, high-volume source of the product.