Starting from the conceptual premises of Garrod, who as long ago as 1902 spoke of chemical individuality, and of Burnet (1949), who recognized as self one's own molecular antigenic structures (as opposed to the antigenic alien: the non- self), the discovery and understanding of HLA antigens and of their extraordinarily individual and differentiated polymorphisms have gained universal recognition. Transplant medicine has now dramatically stressed, within man's knowledge of himself, the characteristic of his biological uniqueness. Today man, having become aware of (...) being a biological antigenic-molecular individuality which is unique and different from that of all of his fellow men (except for monozygotic twins), can therefore easily consider himself a true biological Ego. (shrink)

The concept of predisposition in medicine is ancient, and the term diathesis was used to express it since the days of Hippocrates and, especially, of Galen.The concept of diathesis was enormously popular throughout the nineteenth century, despite the vagueness of its actual meaning. It was clarified only in the early years of the twentieth century (1902), when it was however losing its clinical relevance, by a replacement of the concept ofchemical individuality by A.E. Garrod, followed thirty years later by the (...) concept ofinborn factors in disease (1931). (shrink)

Aggressive therapies and the manipulation of life are now commonly applied to children, often including neonates and children who cannot express their consent. This text discusses a range of bioethical dilemmas concerning children and medicine.