The Netherlands Twin Register (NTR) consists of individuals who have agreed to participate in twin-family studies and was established and is managed by the Department of Biological Psychology, VU Univ
NA = not available, i.e. questions not included in the questionnaire, Q1 = 1st quartile, Q3 = 3rd quartile. 1Not available for pregnancies before 1982. ASame sex female twin pairs born 1926–1966. BSam
This resource describes fundamental features of the immune system (frequency of leukocyte subpopulations, cell surface protein expression) in a large cohort of twins. An accompanying manuscript uses a
Data presented as a combined Australian (AU) twin cohort and a United Kingdom (UK) twin cohort. CCT is measured in µm. The CCT values are the mean CCT for both eyes (Materials and Methods). Full detai
