In both donors, B7-H3 expression was undetectable on resting CD34+ HSPCs but progressively increased from day 3 to day 14 of stimulation, across all progenitor populations, albeit at B7-H3 levels considerably lower than NCI-N87 tumor cells (Fig. 6D; Supplementary Fig. S6H). The gene discussed is CD34; the disease is neoplasm.