Abstract
Six-day cultures of FCS and PHA-LCM-stimulated whole blood from a patient with acute promyelocytic leukemia (APL) were examined for differential cell count and chromosome karyotypes. It was found that both FCS and PHA-LCM could induce partial leukemic cell differentiation and maturation to macrophage in vitro, while PHA-LCM caused lymphocyte proliferation too. The absolute number of atypical blasts and neutrophils decreased in all 6-day cultures. The majority of the dividing cells (81.4%) contained the characteristic translocation for APL, t(15; 17) (q22; q11). Thus, these were members of the leukemic myeloid lineage, whereas some cells contained normal karyotypes, which could be lymphocytes.
Published Version
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