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

From which organism was insulin extracted in earlier times?

Can you list $10$ recombinant proteins which are used in medical practice? Find out where they are used as therapeutics.

The first hormone produced through artificial means (recombinant $DNA$ technology) is .....

Find the correct statements from the following:
$I.$ Gene therapy is a genetic engineering technique used to treat diseases at the molecular level.
$II.$ Calcitonin is a medically useful recombinant product in the treatment of infertility.
$III.$ Bt toxin is a biodegradable insecticide obtained from $Bacillus \text{ } thuringiensis$.

An example of gene therapy is