Mellitzer, G.

erythroid erythroid progenitors culture progenitors cd 34 cells receptor proliferation differentiation factor blood number c-kit medium marrow colony cell numbers beug h bone marrow cord blood bone marrow cells cd 34 erythroid cells von lindern m glucocorticoid fraction presence expression growth erythropoiesi hormone cd 34 fraction erythroid progenitor cells hemoglobin progenitor glucocorticoid receptor bfu-e cfu-e medium c-myb transcription erythroblast erythropoietin lindern corticosteroids ligand analysis tyrosine cfu-e expansion division gr-antagonist zk dna binding hormone receptors self-renewal activation 5 cell divisions igf-i serum tyrosine kinase receptors fig 3 b chicken aliquots blast cells growth factors hemoglobin accumulation colony-forming c-kit expression panel erythroblastosis virus fig 6 hematopoietic cells cell factor condition mass cultures kinase fibrinogen clots mechanism wessely regulation addition ability