Hybridomas are employed for

Applications,like bioremediation,processed food,therapeutics and diagnostics are related with

How many polypeptide chains is human insulin composed of?

Hepatitis $B$ vaccine is produced by.......

With regard to insulin,choose the correct options.
$(a)$ $C$-peptide is not present in mature insulin.
$(b)$ The insulin produced by $rDNA$ technology has $C$-peptide.
$(c)$ The pro-insulin has $C$-peptide.
$(d)$ $A$-peptide and $B$-peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.

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