pluripotential hemopoietic stem cell

Definition: a primitive, undifferentiated form of blood cell from which erythroblasts, lymphoblasts, myeloblasts, and other immature blood cells are derived; probably identical or closely similar to hemocytoblasts and hemohistioblasts; in normal bone marrow, present only in small numbers and difficult to identify in smears, inasmuch as hematoblasts are fragile and easily disintegrated; when marrow is hyperplastic, they may be observed in small groups. They have the capability of self-renewal.

Search Stedman's Medical Dictionary