Abstract
The number of the supposed leukemic stem cells in marrow samples of 54 patients with primary B-linear acute lymphoblastic leukemia was detected by the method of multiparametric flow cytofluorimetry in leukemia diagnosis (zero day). The level of minimal residual disease was estimated on zero and on the fifteenth days of induction therapy. In the course of the research it was found out that leukemic B-cell precursors with СD34+СD38-CD19+ phenotype prevailed among the cells with СD34+СD38-phenotype. The high percentage of both СD34+СD38-, СD34+СD38-, and СD34+СD38-CD19+ among the general population leukemic cells was associated with a worse response to the therapy. Therefore, the initial number of such cells can be considered as a prognostic marker in acute lymphoblastic leukemia in children.
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