- Resistance to cytarabine and gemcitabine and in vitro selection of transduced cells after retroviral expression of cytidine deaminase in human hematopoietic progenitor cells. Bardenheuer, W., Lehmberg, K., Rattmann, I., Brueckner, A., Schneider, A., Sorg, U.R., Seeber, S., Moritz, T., Flasshove, M. Leukemia (2005)