Cord blood contains stem cells capable of hematopoietic repopulation and the production of mature cells belonging to other tissue . While the hematopoietic stem cells are relatively well characterized , the presence of other ( non-hematopoietic ) still raises a lot of controversy . Although there are reports of the presence of the umbilical cord blood mesenchymal stem cell counterparts adults , some authors deny their existence , and the other hypothesis assumes that produced tissue ( nerve , bone , muscle , etc.) can occur as a result of the so-called . hematopoietic stem cell plasticity .

The aim of this study was to optimize the expansion of cells of the monocyte-macrophage lineage to the potential need for experimental and therapeutic. Compared various cell fractions were subjected to expansion (more or less enriched in CD34 + cells), the optimal composition of the growth factors and serum cytokines, and which is incorporated into the culture medium.