The cell proliferation of the TF-1 human erythroleukemic cell line induced by Human Erythropoietin/EPO and neutralization by Erythropoietin Antibody. Proliferation elicited by Recombinant Human Erythropoietin/EPO (0.4 ng/mL) is neutralized by increasing concentrations of EPO antibody [HL2752] (GTX639615).