The granulocytes of 23 patients with chronic granulocytic leukaemia were examined in the indirect immunofluorescence test and some also in the microleucoagglutination test, with specific alloantisera against the NA1, NA2, NB1 and ND1 antigens and a specific granulocyte xenoantiserum. In 10 cases a complete loss of alloantigens was detected. In one patient a partial loss was found. A significant correlation was established between this loss and an accelerated activity (impending blast crisis) of the disease.
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Reijden et al. (1979) studied this question.
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