The International Centre for Genetic Engineering and Biotechnology $(ICGEB)$ established by the United Nations Organization $(UNO)$ is located at

Which of the following methods,other than gene therapy,has been used for the treatment of $ADA$ deficiency?

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

Find the incorrect statement.

Which of the following companies started selling humulin in $1983$?

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.