Desired genes have been introduced into transgenic animals to obtain large-scale production of useful biological products encoded by these genes. This approach is generally referred to as

In mature insulin,chain $A$ and chain $B$ are interlinked by which bond?

In which disease is $\alpha-1$ antitrypsin used for treatment?

How many recombinant therapeutics have been approved for human use in the world over?

Which of the following peptides is $NOT$ present in mature human insulin?

In $1983$,Eli Lilly,an American company,first prepared two $DNA$ sequences corresponding to $A$ and $B$-chains of human insulin and introduced them into the plasmids of $Escherichia$ $coli$ to produce insulin chains. Chains $A$ and $B$ were prepared separately,extracted,and combined by creating: