[The problem of capability for antibody formation in juvenile acute leukemia].

A report is presented on the quantitative behaviour of immunoglobulins G, A and M in 105 children with acute lymphatic leukaemia. Those 24 cases with a "total" hypoimmunoglobulinaemia referring to all three main classes are particularly analysed. Initially hyperplastic forms of leukaemia had primarily lower Ig-levels and a considerably worse prognosis.