[Intrafamilial bone marrow donation: the role of the parents].

Bone marrow transplantation (BMT) is the last chance of recovery for some children suffering from malignant hemopathy or congenital blood disease. BMT with related donor radically alters previous family relationships: each member of the nuclear family becomes actively involved. Parents and siblings all undergo HLA typing.

[Paradoxes in adolescence: break and continuity].

The psychopathological studies on adolescence underline the paradoxical behaviours during this period of life. After the analysis of its concept we show in which way the paradox helps to maintain the continuity of psychological life during the crisis. Thus impossible choices which are part of the contradiction in adolescents be avoided.

[Questioning in child psychosis (author's transl)].

Case study of infantile psychosis characterized by serious behavioral and language disorders, the most conspicuous feature being the unceasing questioning, giving evidence of missing essential references, ambiguous mode of communication and consisting of endless, sometimes metaphysical questions, usually occulted by the child when grown to "Years of reason".

[Cytogenetic study of 350 mental deficient patients at medico-pedagogic institutions].

This report brings to light the results of cytogenetic study carried out on 350 mentally retarded persons (medium: Group I, deep Group II). In 8,2% and 12,56% of the cases a chromosomic abnormality is observed (mainly trisomy 21). These percentages are in correlation with the results of other studies.