扁形动物中三肠目的卵通常都含有卵黄，为了与扁形动物其他种类的复合卵（由生殖细胞和卵黄细胞组成）相区别，特称为单卵或内黄卵（endolecithalegg）。单卵大多行螺旋式卵裂。
单卵双生 [生物] monozygotic twins ; [生物] identical twins ; [生物] monovular twins
单卵双胎 monozygotic twins ; MZT ; monozygotetwin ; eineiige Zwillinge
单卵双生子 MZ ; monozygotic twin
单卵性的 monovular
单卵孪生 [生物] monozygotic twins ; [生物] identical twins
单卵的 [生物] monozygotic
单卵巢纲 Monogononta
单卵裂球 Single blastomere ; cell stage mice embryo derived-blastomeres ; C-MEDB
单卵孪生子 monozygotic twin ; MZ TWINS
一胎于妊娠12～34周死亡者或单卵双胎者，其存活胎婴儿病率增加。
The morbidity of the living fetus was markedly increased in single fetal in 12~34weeks or those in monozygotic twins.
另外，将来有关单卵双胞胎原因更多的信息可以直接通过出生后核对胎盘和羊膜囊的数目来获得。
In addition, more information about the cause of monozygotic twins could be collected in the future by a straightforward check of the Numbers of placentas and sacs when the babies are born.
有关孪生子的研究预告，本病单卵孪生的同病率比双卵孪生一般高4 ~ 6倍，寄养子也是如此。
Notice to twin studies on the disease with the disease monozygotic twins than dizygotic twins rate of 4 to 6 times the height of the foster child as well.
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