Hmm..that's an interesting question. It will be good to know how dependent on blood transfusion the patient is.Is it daily,weekly,monthly,quarterly etc?

It^s not easy to answer this question. I think as Francis does that depends on how frequently the patient is transfused.

thanks alot Francis and Nilo

 the majority of the patients receive transfusion once every 4-6 weeks

Hi, if you take a blood sample over the 4-6 weeks post-transfusion, you have a lot of donor¨s cells circulating, incluiding lymphocytes.