[Ontogeny-derived hematopoietic stem cells divide successively producing clones of differentiated hematopoietic cells].

Abstract excerpt

Forty seven individual haemopoietic cell clones bearing unique radiation markers were studied in long-term bone marrow cultures. Throughout cultivation, clones appeared at different times, 1 to 12 weeks after explanation, survived during 1-10 weeks and markedly varied in size. Usually, the number of metaphases characteristic of an individual clone rapidly increased, achieved a maximum and declined. The cells of...

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