Gene therapy was first used for the treatment of ..........

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.

Name a recombinant vaccine that is currently being used in a vaccination program.

Maximum application of animal cell culture technology today is in the production of

Which of the following techniques serves the purpose of early diagnosis of $AIDS$,cancer,etc?
$I$. Polymerase chain reaction
$II$. Recombinant $DNA$ technology
$III$. Enzyme-linked immunosorbent assay
Choose the correct option.

The diagram below shows: