Table 1.

Effect of IL-3 and SCF on Hemoglobin Synthesis in UT-7/GM Cells

CytokinesDianisidine-Positive Cells (%)
EPO 93.0 ± 1.0 
TPO 7.5 ± 0.6 
GM-CSF 
GM-CSF + EPO 
GM-CSF + TPO 
GM-CSF + IL-3 
GM-CSF + SCF 
IL-3 7.7 ± 0.6 
IL-3 + EPO 24.3 ± 1.5 
IL-3 + TPO 5.7 ± 0.6 
SCF 11.0 ± 1.0 
SCF + EPO 46.0 ± 1.7 
SCF + TPO 9.0 ± 2.7 
CytokinesDianisidine-Positive Cells (%)
EPO 93.0 ± 1.0 
TPO 7.5 ± 0.6 
GM-CSF 
GM-CSF + EPO 
GM-CSF + TPO 
GM-CSF + IL-3 
GM-CSF + SCF 
IL-3 7.7 ± 0.6 
IL-3 + EPO 24.3 ± 1.5 
IL-3 + TPO 5.7 ± 0.6 
SCF 11.0 ± 1.0 
SCF + EPO 46.0 ± 1.7 
SCF + TPO 9.0 ± 2.7 

UT-7/GM cells were cultured in tissue culture flasks with EPO (10 U/mL), TPO (100 ng/mL), GM-CSF (10 ng/mL), IL-3 (10 ng/mL), SCF (100 ng/mL), or their combinations. Two weeks later, the cells were harvested and prepared for dianidisine staining. Dianidisine-positive cells were counted. The data are mean ± SD from triplicate cultures.

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