title: Evidence for the clonal nature of erythropoietic bursts: application of an in situ method for demonstrating centromeric heterochromatin in plasma cultures.
abstract: Erythropoietic bursts were produced in plasma cultures seeded with a mixture of male and female murine bone marrow cells. Chromosome spreads of C-metaphases were prepared and stained in situ with a modification of the C-banding technique. In cultures seeded with mixtures of male and female cells, homogeneity of male or female C-metaphases in erythropoietic bursts was established by the presence or absence of the Y-chromosome. These results provide evidence that each erythropoietic burst is a clone, and that the erythropoietic burst-forming unit (BFU-E) is a single cell.
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D002503:Centromere; D002875:Chromosomes; D002999:Clone Cells; D004920:Erythropoiesis; D005260:Female; D006570:Heterochromatin; D008297:Male; D008677:Metaphase; D051379:Mice; D008810:Mice, Inbred C57BL; D013194:Staining and Labeling; D014998:Y Chromosome
chemical_list: D006570:Heterochromatin