Assimilation of DNA?

Question

When someone has a blood transfusion or an organ donation do they have someone else's DNA for life or is it slowly assimilated and replaced by your own?

Answer 1

Blood cells don't live for very long - about 120 days until they die and are reabsorbed. They are replaced all the time with new ones produced in the bone marrow. A transfusion is just a temporary thing to replace blood lost through accident or surgery, until the body has time to make new cells.

The major component of blood, plasma, doesn't contain any DNA anyway.