Antigens, CD34

**Definition:** Glycoproteins found on immature hematopoietic cells and endothelial cells. They are the only molecules to date whose expression within the blood system is restricted to a small number of progenitor cells in the bone marrow.

**Tree numbers:** - D23.050.301.264.035.134 - D23.101.100.110.134

**Synonyms:** - CD34 Antigen - CD34 Antigens