Fig. 2.
Growth and developmental potential of hematopoietic precursors after culture with I-Deltaext-IgG.
Antigen expression was determined after cells were cultured for 28 days with I-Delta1ext-IgG and 4GF (upper panel) and with I-Delta1ext-IgG, 4GF, and IL-7 (lower panel). Fewer than 0.5% of cells stained with either or both isotype control antibodies.