[Lymphoblastic leukemia and immunological markers].

Acute lymphoblastic leukemia (ALL) is a heterogeneous entity that can be subcategorized on the basis of morphologic aspects, membrane antigens, caryotypic analysis and enzymatic content of the blast cells. Subgroups corresponding to T cells, Band pre-B cells, and non T non B lymphocytes derivations can be defined by immunologic markers. These studies ease the diagnosis and characterisation of ALL, perhaps their treatment, and enhance understanding of the disease.