Riddle for the police

On study in Tuebingen we were told an interesting case. The police found the corpse of a male and to identify the person, they did a blood test, which showed that the genotype of the corpse is female. How could this happen?

(This is not a corpse! This is me in Tubingen)

Later, the identity of the deceased was established, and the information from the medical insurance allowed to explain this riddle. Once this man after the chemotherapy of leukemia, transplanted the stem cells of the bone marrow of a woman. Own bone marrow cells died from chemotherapy, and the transplanted well survived and still produced blood cells with a female genotype.

My name is Andrew, PhD, physician of laboratory diagnostics - House M.D. in real life ;) I work in the field of bone marrow transplantation for patients with cancer. In my blog you will know why we yawn, our eyes cry, fingers shrivel and scrotum is cold.  Interested? Then follow this blog and don't forget to share the information with your friends!