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MPB CD34+ cells of myeloma patients before and after culture, and transduction. (A) Phenotypic analyses of CD34+ cells before and after cytokine culture, ΔNGFR transduction, and selection of transduced cells. (B) Relative fold expansion in culture, and recovery after transduction and selection of total cells (open bars) and CD34+ cells (black bars), were measured, in comparison with the initial cell population (fresh cells).
