Published online by Cambridge University Press: 01 August 2014
After an intense cytostatic treatment of the patient F.N., whose bone marrow was completely infiltrated with lympho-sarcocytes, a bone marrow transplantation was made. The donor was the patient's sister. The difference in sex chromosomes made it possible to observe the fate of the transferred cells. Immediately after the treatment, till 6½ months later, cells with feminine caryotype were traceable in the patient's peripheral blood (up to 2%). This proves the proliferation of donor cells in the acceptor.