What is an advantage of using transgenic bacteria to produce human proteins?

Transgenic bacteria produce human proteins in a greater amount.

Bacteria are simple organisms with fast reproduction. The bacterial population can double its size every 20 minutes. So, they are very suitable for growing in the culture and for genetic modifications. Nowadays, it is easy to modify bacterial genome to produce desired proteins, such as insulin, human growth hormone, etc. Thanks to its quick reproduction, desired proteins are produced in greater amount for a short period of time.

In my own word cell technology can  lead to advances in the understanding of diseases mechanism and transmission because diseases is very bad