title: Bipotential B-macrophage progenitors are present in adult bone marrow.
abstract: According to the current model of adult hematopoiesis, differentiation of pluripotential hematopoietic stem cells into common myeloid- and lymphoid-committed progenitors establishes an early separation between the myeloid and lymphoid lineages. This report describes a rare and previously unidentified CD45R-CD19+ B cell progenitor population in postnatal bone marrow that can also generate macrophages. In addition to the definition of this B-lineage intermediate, the data indicate that a developmental relationship between the B and macrophage lineages is retained during postnatal hematopoiesis.
authors.affiliation: Department of Pathology and Laboratory Medicine and the Jonsson Comprehensive Cancer Center, UCLA School of Medicine, Los Angeles, CA 90095-1732, USA.
authors.forename: E
authors.initials: E
authors.lastname: Montecino-Rodriguez
authors.forename: H
authors.initials: H
authors.lastname: Leathers
authors.forename: K
authors.initials: K
authors.lastname: Dorshkind
mesh_terms: D000818:Animals; D018941:Antigens, CD19 / Q000378:metabolism; D001402:B-Lymphocytes / Q000166:cytology* / Q000276:immunology*; D003114:Colony-Forming Units Assay; D005260:Female; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000276:immunology*; D015851:Interleukin-7 / Q000494:pharmacology; D007694:Killer Cells, Natural / Q000166:cytology / Q000276:immunology; D017493:Leukocyte Common Antigens / Q000378:metabolism; D008264:Macrophages / Q000166:cytology* / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D011247:Pregnancy; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology
chemical_list: D018941:Antigens, CD19; D015851:Interleukin-7; D017493:Leukocyte Common Antigens