With reference to monoclonal antibodies, often mentioned in news, consider the following statements: I. They are man-made proteins. II. They stimulate immunological function due to their ability to bind to specific antigens. III. They are used in treating viral infections like that of Nipah virus. Which of the statements given above are correct?

I. Correct. Monoclonal antibodies are laboratory-made (man-made) proteins designed to mimic or modify the immune system’s action.

II. Correct. They bind to specific antigens/targets with high specificity and can thereby enhance, block, or modulate immune responses.

III. Correct. Monoclonal antibodies have been explored/used for viral infections, including Nipah virus (for example, m102.4 as an investigational therapy).

Hence, all three statements are correct.