Arata Sugita

Incidences of dystopia canthorum and some other signs in a family with Waardenburg syndrome type I

SummaryIncidences of dystopia canthorum and some other signs were studied in a family with Waardenburg syndrome type I. When “W” index was used as a diagnostic parameter, dystopia canthorum was expressed in 88% of the family members who exhibited one or more of the signs, whereas incidence of this trait was calculated to be 63% or less, when the other indices were employed. Incidences of the other signs ranged from 50% to 13%. These observations indicate that W index is the most sensitive indicator of dystopia canthorum, and that this characteristic is most frequently expressed among the signs of Waardenburg syndrome type I.

The vas deferens in man and monkey: spermiophagy in its ampulla

Extensive research concerning function and structure of the vas deferens has been accumulated in various mammalian species, including man, by using light and transmission electron microscopy. In recent years the vas has attracted the considerable attention of morphologists regarding the problems of fertility or sterility. More recently, surface topography of the vas deferens of rats, dogs and humans viewed by SEM has indicated that there exist not only species differences in luminal configuration, but regional variations along the longitudinal axis of the vas deferens (Nowell and Faulkin, 1974; Zaneveld and Brueschke, 1975; Hamilton and Cooper, 1978; Kennedy and Heidger, 1979).