.......... works on the principle of antigen-antibody interactions.

Genetically engineered insulin can be obtained by

The diagram below shows:

Match the columns:

Column-$I$	Column-$II$
$(1)$ Diabetes	$(a)$ $ADA$
$(2)$ Enzyme replacement therapy	$(b)$ Alpha-lactalbumin
$(3)$ Emphysema	$(c)$ Insulin
$(4)$ Rosie cow	$(d)$ $\alpha-1$-Antitrypsin
	$(e)$ Typhoid

Which enzyme was targeted during the first clinical gene therapy given in $1990$ to a $4$ year old girl?

Many proteins are secreted in their inactive form. This is also true of many toxic proteins produced by microorganisms. Explain how this mechanism is useful for the organism producing the toxin?