Final answer:
Reo Pro, also known as abciximab, is the recombinant protein used for the prevention of blood clots.
Step-by-step explanation:
The recombinant protein that has been used for the prevention of blood clots is Reo Pro. Reo Pro, also known as abciximab, is a monoclonal antibody that inhibits platelet aggregation and therefore helps to prevent the formation of blood clots. It's not to be confused with OKT-3 which is a monoclonal antibody used to prevent organ rejection following transplantation, DNase which is used to cut DNA into smaller fragments, or PDGF which is involved in wound healing processes. The use of recombinant proteins like Reo Pro represents the success of genetic engineering in producing therapeutic agents.