normal twin

normal twin

[′nȯr·məl ′twin]
(crystallography)
A twin crystal whose twin axis is perpendicular to the composition surface.
References in periodicals archive ?
Twin pregnancy with one normal twin and one complete hydatidiform mole: the normal twin usually has its own normal placenta.
The Sahara's engines were the normal twin cylinder units, each producing 12hp and each with a separate fuel tank.
05% patients were seen having normal twin pregnancies including 3 monoamniotic sacs while 15 of diamniotic sacs however 0.
The oldest and the most persistent theory of visceral inversion is that twins are often mirror image of each other that a single individual with situs inversus represents a survivor whose normal twin has died in utero.
Mrs Garret, aged 26, now faces a wait to see if the normal twin will survive the trauma of surgery.
He said ultrasound scans did not show that the normal twin was in any distress during or following the procedure.
Success rate is of greater than 90% survival of the normal twin with an average gestational age at delivery of 35 weeks.
A reversed arterial flow was noted on Doppler study coming from apparently normal twin to abnormal twin, fig (2) Diagnosis of TRAP sequence made.
The umbilical cord of the normal twin was 20 cm with central attachment, while the other umbilical cord was 10 cm long with peripheral attachment.
5] Blood from the normal twin reaches the acardia through a large artery-artery anastomosis, flows through the acardia in reverse course and returns to the pump twin via a large vein-vein anastomosis.
Conjoined twins result from incomplete separation of monozygotic, monochorionic twins early in embryonic development, resulting in body parts of the otherwise normal twins remaining fused throughout development.
In a group of 22 monozygotic twin pairs discordant for schizophrenia, the affected twins had significantly more total obstetrical complications, more labor-delivery complications, and more neonatal complications than the normal twins or a matched control group.