Results 121 to 130 of about 361,014 (259)

From the Cradle to the Labor Market? The Effect of Birth Weight on Adult Outcomes [PDF]

Lower birth weight babies have worse outcomes, both short-run in terms of one-year mortality rates and longer run in terms of educational attainment and earnings.
Kjell Salvanes, Paul J. Devereux, Sandra E. Black   +2 more
core  

Class - III malocclusion: Genetics or environment? A twins study

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2005
Etiology of class-III malocclusion is generally believed to be genetic. A wide range of environmental factors have been suggested as contributing factors for the development of class-III malocclusion.
Jena A, Duggal R, Mathur V, Parkash H
doaj  

Second-trimester markers of fetal size in schizophrenia: a study of monozygotic twins [PDF]

, 1992
OBJECTIVE: Since the second prenatal trimester is the critical period of massive neural cell migration to the cortex, and fingertip dermal cells migrate to form ridges during this same period, the authors sought to determine whether there are differences
Bigelow, LB, Bracha, HS, Cunniff, C, Gottesman, II, Torrey, EF   +4 more
core  

Sickness Absence and the Effects of Having a Spouse - Can twins reveal the selection effect? [PDF]

Individuals that are married are often found to be healthier than singles. A crucial issue is to distinguish if this is due to a selection effect or due to a true protective effect of partnership. The purpose of this study is to distinguish these effects
Nilsson, william
core   +1 more source

A synchronized unique presentation of inguinal hernia in infantile twins

Egyptian Pediatric Association Gazette
Background Female structures such as the ovaries, fallopian tubes, ligaments, and uterus are rarely encountered inside a hernial sac. The prevalence of groin hernias containing parts of female genitalia remains unknown. Occurrence in monozygotic twins is
Srikanth Thiyagarajan, Prathiba Nanjundaiah, Saravana balaji Muthukrishnan   +2 more
doaj   +1 more source

Examining the Utility of the Mammalian Methylation Array for Pan-Mammalian Analysis of Monozygotic Twinning

Epigenomes
Background/Objectives: Human identical twins are born at a rate of 3–4 per 1000 live births. Many other mammals also occasionally produce monozygotic twins, referred to as sporadic polyembryony. The underlying mechanisms are unknown.
Jenny van Dongen, Charles E. Breeze, Twinning Genetics Consortium   +2 more
doaj   +1 more source

Virome Diversity Correlates with Intestinal Microbiome Diversity in Adult Monozygotic Twins.

Cell Host and Microbe, 2019
J. L. Moreno-Gallego, Shao-Pei Chou, S. C. D. Rienzi, Julia Goodrich, T. Spector, J. Bell, Nicholas D. Youngblut, I. Hewson, Alejandro Reyes, Alejandro Reyes, R. Ley   +10 more
semanticscholar   +1 more source

Does Education Pay in Urban China? Estimating Returns to Education Using Twins [PDF]

This paper empirically estimates the returns to education using twins data that the authors collected from urban China. Our ordinary least-squares estimate shows that one year of schooling increases an individual¡¦s earnings by 8.4 percent. However, once
Hongbin Li, Junsen Zhang, Ning Ma, Pak Wai Liu   +3 more
core  

From The Cover : Epigenetic differences arise during the lifetime of monozygotic twins

, 2005
Vaag, Zarko Stephan, T. Spector, Yue-zhong Wu, C. Plass, M. Esteller, Boix-Chornet, A. Sánchez-Aguilera, C. Ling, E. Carlsson, P. Poulsen, Allan, Ballestar, D. Heine-Suñer, J. Cigudosa, M. Urioste, J. Benítez, Manuel, M. Fraga, E. Ballestar, M. Paz, S. Ropero, F. Setién   +22 more
semanticscholar   +1 more source

Monozygotic Twinning in Mice [PDF]

Journal of Medical Genetics, 1965
Wallace, M E, Williams, D A
openaire   +2 more sources