efense against infectionРPlatelets: Mediate blood clottingРT-lymphocytes: antigen presentingРB-lymphocytes? Plasma cell:РSource of antibodiesРPluripotential stem cellsРMyeloid stem cellsРLymphoid stem cellsРUnipotential progenitor cellsРImmature hematopoietic cellsРmature hematopoietic cellsРposes of the options mitment to different lineages and the progressive stages of maturation at which partial plete arrest can occur, results in the wide array of malignant disease-LeukemiaРStem cellРProgenitor cellРImmature cellРMature cellРAccumulation of mutations of DNA within a pluripotential stem cell or very early progenitor cell gives rise to leukemic stem cellsРNormal stem cellРLeukemic stem cellРEtiology&PathogenesisРEnvironmental factorsР ?Acquired diseasesРLesions to the DNAРClonal expansion
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