[Morphological analysis of dynamics of myeloid cells in cultured erythroblastic islets]

Morphological analysis of myeloid cells in cultures of erythroblastic islets (EI) was undertaken. All types of myeloid cells (except for myeloblasts) were present in EI preparations isolated from the rats bone marrow. Natural EI include all the cells of myeloid lineage in their "crown". In the course of in vitro cultivation the number of EI including mature granulocytes appeared increased, while the contents of EI associated with promyelocytes, myelocytes and metamyelocytes decreased. The data obtained is discussed in view of probable EI role in bone marrow myelopoiesis.