Given the hematopoietic stem cells contained in cord blood or the tissue of the umbilical cord or placenta, it is appropriate to use such blood for the treatment of certain diseases - leukemia, cancer, lymphomas, neuroblastomas, disorders hematopoiesis, immunity and others. However, it is still true that in many cases the treatment and its effects are in the phase of clinical trials or research. In many cases, umbilical cord blood treatment is not used or is only a subsequent option after the failure of other treatment methods. Generally, there are a small number of cases where treatment of this kind has helped or been successful.