Six acute lymphoblastic leukemia (ALL) patients were studied whose lymphoblasts formed rosettes with sheep erythrocytes to determine if they expressed a receptor for IgM, which is a characteristics of normal T cells; chronic lymphocytic leukemia (CLL) cases carrying B-cell markers were compared as controls. In all six cases of ALL, but not CLL, IgM was expressed after overnight incubation in tissue culture medium. It is therefore considered that the IgM receptor can be used as an additional reliable marker for classifying leukemic disorders.
ASJC Scopus subject areas
- Immunology and Allergy
- Pathology and Forensic Medicine