Recombinant human CD34 extracellular domain fused to Fc tag, used in immunological research to study interactions of hematopoietic stem and progenitor cells. The Fc tag enables easy detection and purification via protein A/G affinity systems. Commonly applied in flow cytometry, ELISA, and functional assays to investigate CD34 ligand binding, cell surface interactions, stem cell differentiation, and immune cell functions. Supports development of cell-based therapies and characterization of stem cell populations in regenerative medicine.