title: Stem cells circulating in the blood.
mesh_terms: D000818:Animals; D001202:Ascitic Fluid / Q000166:cytology; D001803:Blood Transfusion; D016026:Bone Marrow Transplantation; D004285:Dogs; D004912:Erythrocytes; D006087:Graft vs Host Reaction / Q000517:prevention & control; D006168:Guinea Pigs; D006413:Hematopoietic System; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000628:therapy; D007962:Leukocytes; D051379:Mice; D009369:Neoplasms / Q000628:therapy; D011828:Radiation Chimera; D014184:Transplantation, Homologous