The concentration of circulating hematopoietic stem and progenitor cells has not been studied longitudinally. Here. we report that the proportions of Lin-CD34+38- hematopoietic multipotent cells (HMCs) and of Lin-CD34+CD38+ hematopoietic progenitors cells (HPCs) are highly variable between individuals but stable over long periods of time. in both healthy individuals and sickle cell di... https://www.spidertattooz.com/