The transmission of immune globulins from the mother to the foetal and newborn young.

35 malnourished-looking baby, who has been affected in the last few weeks of pregnancy only, and the short relatively well-proportioned baby with rubella syndrome whose growth was retarded in the first trimester. The long thin baby has a relatively normal number of thin cells whereas the rubella baby has a low cell population in organs throughout his body. l‘hese two situations are not, however, mutually exclusive so that a baby whose growth has been retarded for months rather than weeks may present some reduction in cell population in addition to a reduced cell size. In any individual case the infant’s potential for physical and mental development is likely to be limited by the extent to which the cell population of different organs has been permanently depleted. Nutrition of the foetus and the newly born