1. The EPO gene is isolated from the human body.
2. Recombinant DNA is created by inserting the EPO gene into a plasmid.
3. Recombinant DNA is introduced into host cells.
4. Hosts with recombinant DNA are cultured.
5. Medicines are made by isolating EPO from the host. Pushing EPO by injection to a kidney patient reverses the anemia.