the most primitive, undeveloped blood cell.

Earliest stem cells; can mature into all cell types in the blood, but also maintain their own numbers

Any stem cell that has the same functional capacity—that is, stable pluripotency—as an embryonic stem cell, though not necessarily the same origin.

The cell produced in bone marrow from which all immune cells arise.

a hematopoietic cell in the bone marrow that is capable of differentiating into any type of blood cell.

a primitive cell from which all other blood cells originate; also called a stem cell.

the most primitive of the stem cell.