Wright-Giemsa staining of hematopoietic cells expanded on DAS 104-4 and DAS 104-8. (A) Hematopoietic cells expanded for 7 days on DAS 104-4. The large cells are stromal cells and the small cells are hematopoietic cells. Note the relatively immature morphology of the hematopoietic cells. (B) Hematopoietic cells expanded for 7 days on DAS 104-8. Note the mature macrophage-like appearance of the smaller hematopoietic cells. The bar corresponds to 100 μm.