$\alpha-1$ antitrypsin is

Consider the following statements about therapeutic drugs:
$I$. The recombinant $DNA$ technology is used for the production of therapeutic drugs which are safe and effective.
$II$. It avoids unwanted immunological responses,commonly observed with similar products isolated from non-human sources.
$III$. About $30$ recombinant therapeutics have been approved for human use in the world,including India.
Which of the statements given above are correct?

Mention the importance of Recombinant $DNA$ technology in terms of vaccination.

Which kind of therapy was given in $1990$ to a four-year-old girl with adenosine deaminase $(ADA)$ deficiency?

Magic bullets are the

The human insulin produced by genetic engineering is called $......$.