Biological diversity variations of pediatric acute leukemia in Brazil: contribution of immunophenotypic profiles to epidemiological studies Diversidades biológicas da leucemia agud... oleh Maria S. Pombo-de-Oliveira, José C. Cordoba, Dora M. Alencar, Mércia M. Campos, Kadma Carriço, Jane Dobbin, Maria D. Dorea, Regina Ferreira, Núbia Mendonça, Isis Q. Magalhães