[Interchange of babies in Portugal by exclusions in the ADA, GPT, ESD and HLA systems (author's transl)].

The suspicion of an interchange of babies in two Portuguese families could not be dissipated in the first course of testing the following systems being considered: AB0, MNSs, Rhesus, Kell, Cellano, Duffy. Including further markers in an additional opinion, multiple father- and mother-exclusions could be made in the systems of ADA, GPT, EsD, and HLA. The suspicion thus showed to be justified and the children were given back to their natural parents.