Results 161 to 170 of about 30,111 (184)

The endocrinology of dizygotic twinning in the human

Molecular and Cellular Endocrinology, 1998
Heredity, higher maternal age and increased parity are well defined conditions associated with dizygotic twinning. An endocrine model of excessive secretion of pituitary gonadotrophic hormones explains multiple ovulation as a result of multiple follicle growth.
Lambalk, C.B., Koning, C.H. de, Braat, D.D.M.   +2 more
openaire   +4 more sources

MONOZYGOTIC AND DIZYGOTIC TWIN DIAGNOSIS

Annals of Human Genetics, 1955
SummaryA method of estimating the probability of dizygotic and monozygotic twin pairs is described. Parent‐child and sib‐sib frequency tables for the ABO, MNS and Rhesus blood‐group systems and formulae for obtaining these tables for the P, Lutheran, Kell, Duffy, Kidd and non‐secretor (or Lewis) systems are given.Tables of the distribution of ...
L. S. Penrose, Sheila Maynard Smith
openaire   +3 more sources

Duodenal atresia in dizygotic twins

Journal of Pediatric Surgery, 1997
The authors report duodenal atresia occurring in both members of dizygotic twins who showed no signs of Down's syndrome, and both had normal chromosomal constitutions. They both had the two unlinked end type of atresia in the second portion of the duodenum, and direct end-to-end duodenoduodenostomy was carried out.
Shuuichirou Kitahara, Shuuichirou Kitahara, Masaru Terada, Masaru Terada, Takahide Yokoyama, Takahide Yokoyama, Yoshitaka Momose, Yoshitaka Momose, Shinpachi Ishizone, Shinpachi Ishizone, Seiji Kawasaki, Seiji Kawasaki   +11 more
openaire   +3 more sources

Myotonia Congenita in Dizygotic Twins

European Neurology, 1972
A pair of dizygotic twins suffering from myotonia congenita born in Great Britain, is described. The twins were subjected to genetic, biochemical and electromyographic studies as were 5 relations in ...
M. A. Ron, John Pearce
openaire   +3 more sources

Coarctation of the aorta in dizygotic twins

Cardiology in the Young, 2000
AbstractThe incidence of congenital heart disease is higher in monozygotic than dizygotic twins, with a higher concordance rate. Although coarctation of the aorta has previously been reported in monozygotic twins, to the best of our knowledge it has not been described in dizygotic twins. We report here such a concurrence in dizygotic twins conceived by
Monica Caldas, Rami Dhillon
openaire   +3 more sources

Sirenomelia dipus in a dizygotic twin

The Indian Journal of Pediatrics, 2002
A rare case of sirenomelia in a LBW, IUGR & second of a dizygotic twin having multiple congenital anomalies is being reported. Apart from the features of sirenomelia, the newborn had a single umbilical artery, radial hypoplasia, total anorectal & urogenital agenesis and undetermined sex.
K. Y. Vilhekar, Sanjeev Managoli, Janaki Iyenger, Nitin Gagane, Pushpa Chaturvedi, Vikiram Dutta   +5 more
openaire   +3 more sources

Coital rates and dizygotic twinning

Journal of Biosocial Science, 1972
There is some evidence, mostly of an epidemiological nature, that coital rates may be positively associated with dizygotic twinning. It is suggested that this link is causal, in which case an explanation becomes available for some curious—and hitherto unexplained—features of dizygotic twinning rates by maternal age and legitimacy.
openaire   +3 more sources

Congenital biliary dilatation in dizygotic twins [PDF]

Pediatric Surgery International, 2004
Congenital biliary dilatation (CBD) of different types was recently noted in dizygotic twins. Our cases suggest the possibility of hereditary involvement in CBD. On the other hand, CBD discordance in six sets of monozygotic twins has been reported, which would suggest that the occurrence of CBD is not compatible with single gene control, although ...
Akihide Tanano, Rintaro Yui, Kohei Takada, Yasuo Kamiyama, Katsuji Tokuhara, Yoshinori Hamada   +5 more
openaire   +2 more sources

Myelomeningocoele in dizygotic twins.

Nigerian journal of clinical practice, 2009
Periconceptional use of folic acid can reduce a woman's risk of having a baby with a neural-tube defect and other congenital abnormalities.Case reports of babies OO both males, who were delivered at term by emergency caesarean section by a 21 year old woman.
Ugwu, RO, Eneh, AU
openaire   +2 more sources

Fetal alcohol syndrome in dizygotic twins

The Journal of Pediatrics, 1975
A pair of fraternal twins with stigmata of the fetal alcohol syndrome are described. Apparently differences in susceptibility to the dysmorphogenic influence of ethanol caused one twin to be more severely affected than the other one. Both infants are growing poorly postnatally, and both are at risk for retarded development.
Katherine Kaufer Christoffel, Ira S. Salafsky   +1 more
openaire   +3 more sources