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  • Title: The use of the alkaline phosphatase-antialkaline phosphatase technique for immunophenotyping acute myeloid leukemia.
    Author: Sacchi S, Marietta M, Vecchi A, Morselli S, Longo R, Grande A, Torelli U.
    Journal: Acta Haematol; 1991; 85(1):6-11. PubMed ID: 2011935.
    Abstract:
    The leukemic cells from 31 cases of acute myeloid leukemia were immunophenotyped by the alkaline phosphatase-antialkaline phosphatase (APAAP) technique, using 7 monoclonal antibodies reactive with cells of myeloid origin. We found a good correlation between the results obtained using the APAAP method and indirect immunofluorescence. In most cases, we observed a slight degree of variation in the percentages of reacting cells when comparing the two methods. Nevertheless, taking 20% of cells being immunolabeled as a threshold for defining a case as positive, we found no discrepancies in the final classification of each case. The main advantages of the APAAP method are: (1) its use with routinely prepared peripheral or blood marrow samples, and (2) the possibility of correlating immunological characterization with morphology. Since the results with the APAAP method were comparable with those obtained using indirect immunofluorescence, we suggest that this former technique can complement, and sometimes substitute, other methods of immunological evaluation.
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