Affected parent and age of onset in Huntington's chorea.

Affected parent and age of onset in Huntington's chorea.

In a recent report, Merritt et al. (1969) searched the literature and their own material for cases of Huntington's chorea with onset before the age of 21. They found that when the disease began in childhood or adolescence the history was generally on the father's side. In 89 out of 113 cases in which descent could be determined, the father or his relatives were affected. The sex ratio among the...

onset in Huntington ' s chorea . Affected parent and age of

In a recent report, Merritt et al. (1969) searched the literature and their own material for cases of Huntington's chorea with onset before the age of 21. They found that when the disease began in childhood or adolescence the history was generally on the father's side. In 89 out of 113 cases in which descent could be determined, the father or his relatives were affected. The sex ratio among the...

morphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials

ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...

The relation of sex of affected parent to the age at onset of Huntington's disease.

Estimation of the age at onset of Huntington's disease from factors associated with the affected parent.

In an attempt to relate the age at onset of Huntington's disease to parental factors, the effects of parental onset-age (Po) and the age of the transmitting parent at the birth of a subsequently affected child (Pc) have been examined in a sample of cases ascertained from Victorian kindreds. There was a significant positive linear regression of onset-age on the variable Po-Pc; the result was ind...