One hundred and eighty-four mongoloid infants and children (mainly referred for counselling)
have been examined at the Hospital for Sick Children, Toronto, over a recent two-year …

In a total sample of 105 triploid spontaneous abortions and live-born and stillborn infants, the
parental origin could be determined in 77%. Dispermy was the most common cause of this …

The syndrome caused by partial trisomy for 11q is reviewed on the basis of a patient of our
own and 20 cases (including a stillbirth) from the literature. The main symptoms are …

THE FACT THAT no two human beings have identical dermal patterns might mean, in
conjunction with a considerable similarity of these patterns in monolvootic twins, that the …

Clinical and autopsy findings of an infant who died at 35 days of age with multiple congenital
malformations are described. Cytologic studies indicate that the patient was a double …

SIMPLE LOSS OF PART of an autosomal chromosome was reported by de Grouchy et al. in
1963, who observed in a retarded child that the short arm of one of the No. 17-18 …

RING chromosomes have been found in some species, the most intensively studied being
maize 1 and Drosophila 2 . They have also been induced by irradiating human cells in vitro 3 …

Replies to questionnaires sent to the parents of 53 mongoloid children, inquiring about any
radiation they had received before the child had been born, suggested a strong association …

An unselected series of spontaneous abortions and their mothers were karyotyped with Q-bands
to obtain a frequency of twin conceptions lost during the first trimester. Among 661 …

… Discussion Our retrospective study (Uchida and Curtis 1961) had the disadvantage of
being dependent upon the patients’ powers of recall. On the other hand, a prospective study is …