title: Migration of fibroblastoid stromal cells in murine blood.
abstract: This paper describes the kinetics of fibroblastic colony forming units (CFU-f) in murine blood after phenylhydrazine-induced haemolytic anaemia and their subsequent migration into haemopoietic organs. Murine blood contained 5.3 +/- 0.8 CFU-f per 10(6) nucleated cells. Absence of particle ingestion and factor VIII-related antigen in addition to the enzyme pattern in CFU-f-derived cells confirmed that these cells did not have a macrophage-like or endothelial nature. Phenylhydrazine treatment of mice resulted in a 3-fold increase in blood CFU-f numbers which was accompanied by increases in blood cellularity and granulocyte-macrophage progenitor numbers. When both partners of CBA/N and CBA/T6T6 mice in parabiosis had been treated with phenylhydrazine, spleens and femoral bone marrow of both mice were shown to contain partner-derived CFU-f. These data suggest that circulating CFU-f represent a stromal cell population which can migrate into haemopoietic organs.
mesh_terms: D000743:Anemia, Hemolytic / Q000097:blood* / Q000139:chemically induced; D000818:Animals; D001853:Bone Marrow / Q000473:pathology; D001854:Bone Marrow Cells; D005347:Fibroblasts / Q000166:cytology* / Q000187:drug effects; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects; D007700:Kinetics; D051379:Mice; D008808:Mice, Inbred CBA; D008815:Mice, Inbred Strains; D010659:Phenylhydrazines; D013154:Spleen / Q000166:cytology / Q000473:pathology
chemical_list: D010659:Phenylhydrazines; C030299:phenylhydrazine