$\text{ELISA}$ is :-

$E. coli$ is useful in the production of:

In $1983$, Eli Lilly, an American company, prepared two $DNA$ sequences corresponding to $A$ and $B$ chains of human insulin and introduced them in plasmids of which organism to produce insulin chains?

Kohler and Milstein developed a method in biotechnology for the production of

Injecting functional adenosine deaminase into a patient's (lacking $ADA$ gene) blood cells may be considered as

Which of the following statements are false?
$I$. Insulin for curing diabetes,used to be extracted from the pancreas of slaughtered pig and cattle.
$II$. Animal insulin is slightly different from human insulin.
$III$. Animal insulin causes some undesirable side effects such as allergy.
$IV$. Bacteria cannot be made to synthesise insulin from its gene because of the presence of introns.
Choose the correct option.