Conjoined twins is a phenomenon believed to be caused by either delayed splitting of the fertilized ovum or fusion of the embryonic stem cells. Disorganization of mutant genes is believed to be a cause in some cases. We report a case of stillborn dicephalus tribrachius female conjoined twins with features that are not reported previously in the literature with a single umbilical artery and two ...

sheep conjoined twins have been reported less than cow. an apparently female conjoined twin lambs was examined based on external and internal features. in radiology, two vertebral columns and two pairs of the ribs were seen. only two heads and two necks were separated (thoraco-omphalopygopagus). there were three forelimbs (tribrachius), one of which grew on dorsal region as a notomelus.  teat b...

INTRODUCTION Cases of conjoined twins occur so rarely that it is important to learn as much as possible from each case. CASE PRESENTATION We present a case of 9-hour-old, female, Nigerian dicephalus parapagus conjoined twins discordant for anencephaly diagnosed only after the birth of the twins. The anencephalic twin was stillborn while the normal one died within 9 hours of birth from cardiop...

Parapagus dicephalus conjoined twins are rare but severe complication of multigestational pregnancies. Many conjoined twin pregnancies are diagnosed before reaching viability. We present a case report of conjoined twins reached term. A 35-year-old pregnant woman, who had no prenatal follow up, delivered conjoined twins at Van Maternity Hospital. The total weight of the fetuses was 4750 g. and t...

Most animals exhibit stable left-right asymmetries in their body. Although significant progress has been made in elucidating the mechanisms that set up these asymmetries in vertebrates, nothing is known about them in Drosophila. This is usually attributed to the fact that no reversals of stable left-right asymmetries have been observed in Drosophila, although relevant surveys have been carried ...