$A$ drug obtained through genetic engineering and useful for treating infertility is

In $1990$,which therapy was given to a four-year-old girl suffering from adenosine deaminase $(ADA)$ deficiency?

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?

In the earlier times,the insulin used for diabetic patients was:

$ELISA$ is based on the principle of

Which of the following is a correct statement with respect to animal insulin?