The relative contributions of genetic and environmental components in the variability of anthropometric measurements were studied in 54 twin pairs. Thirty pairs of monozygotic (MZ) and 24 pairs of dizygotic (DZ) twins were investigated to estimate the role of genetic, environmental and hereditary factors determining anthropometric measurements comprising body weight, standing height, sitting he...

introduction: regarding to the recent advances in assisted reproductive techniques (art), twin and multiple pregnancies have increased during past years. objective: this study was performed to compare obstetrics and perinatal outcomes of dichorionic twin pregnancy following art with spontaneous pregnancy. materials and methods: in this cross-sectional study which was performed in ghaem hospital...

:HSUHVHQWDFRQMRLQHGWZLQ &7FDVHRISUHJQDQF LQ D HDUROG ZRPDQ JUDYLGD SDUD ZKRFDPH IRUKHU¿UVW URXWLQHXOWUDVRXQGDW ZHHNVRIJHVWDWLRQ6KHFRQFHLYHGEVSRQWDQHRXV conception. The patient had a healthy child from a SUHYLRXVSUHJQDQF7KHLQLWLDOXOWUDVRXQGUHYHDOHG two fetuses with a fused thorax and abdomen, two spines with an unusual extension, one beating heart, VKDUHG OLYHU DFURVV WKH IHWXVHV IRXU NLGQHV W...

Leukocyte telomere length, representing the mean length of all telomeres in leukocytes, is ostensibly a bioindicator of human aging. The authors hypothesized that shorter telomeres might forecast imminent mortality in elderly people better than leukocyte telomere length. They performed mortality analysis in 548 same-sex Danish twins (274 pairs) aged 73–94 years, of whom 204 pairs experienced th...

PURPOSE We examined whether the presence of a spouse and the frequency of interaction with children, relatives, and friends significantly influence the risk of dying in late life. We assessed these effects separately by gender, controlling for self-reported health. In addition, we examined whether interaction with the co-twin has a different impact on mortality for identical and fraternal twins...

Leukocyte telomere length, representing the mean length of all telomeres in leukocytes, is ostensibly a bioindicator of human aging. The authors hypothesized that shorter telomeres might forecast imminent mortality in elderly people better than leukocyte telomere length. They performed mortality analysis in 548 same-sex Danish twins (274 pairs) aged 73-94 years, of whom 204 pairs experienced th...

We introduce Twin RSA, pairs of RSA moduli (n, n + 2), and formulate several questions related to it. Our main questions are: is Twin RSA secure, and what is it good for?

limb bud first appears during the third week of gestation with the upper limb buds appearing a few days before the lower limb buds. complete absence of one or more limbs, called amelia, occurs prior to the eighth week of gestation. we report a case of amelia in a twin gestation.