Immunological markers in acute leukaemia

61 acute leukaemias were classified by both immunological and morphological criteria. In 58 (95%) of the cases correlation was found between the immunological and morphological diagnosis. In 3 (5%) cases, no correlation was found between the immunological subclasses and the FAB-subgroups in ALL. Neither was a correlation found between FAB-subclasses in AML and reaction with myeloid antibodies other than MY-7 which did preferentially react with M4 and M5 leukaemia.