Answer:
The human growth hormone produced by transgenic bacteria.
Step-by-step explanation:
The first species to be transformed in the experiment were transgenic bacteria commonly known as Genetically Bacteria, owing to their basic genetics. Such bacteria are now used for multiple purposes and are especially important in generating large quantities of pure human proteins for medicinal usage.
For example, a rat that introduces a novel chromosome into an organism's germline and then domesticated to involve that novel gene reliably is termed as a transgenic gene rat.