A case of trisomy 22 liveborn female baby with multiple congenital anomalies is described.
摘要作者例具有种先天性异常的三色体22症的活产女婴。
So this fetus presented seeral signs of trisomy 21, including the hypoplasia of the nasal bone, hypodontia, micrognathia, and hypospadias.
这样，本例胎儿示21三体的若干征象：包括鼻骨发育不全、牙发育不全、小颌和尿道下。
Polysomy, which includes trisomy, is the condition in which one or more chromosomes are represented more than twice in the cell.
色体包括三色体都是条或条色体代替了正常细胞中的两条色体形成的。
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Down's syndrome and trisomy 18 syndrome are two genetic disorders that are often screened for as part of prenatal genetic testing.
唐氏综合症和 18 三体综合征是两种传，常作为产前基因检测的部分进行筛查。
Sometimes though, one parent might contribute one chromosome too many, which is called trisomy, or one chromosome less, which is called monosomy.
但是有时候，双亲中的方可能会贡献条染色体，这被称为三体；或者少条染色体，称为单体。
Since trisomy 15 isn't compatible with life, the fetus only survives only if they lose one copy of the chromosome in the early embryo, called trisomy rescue.
15号染色体三体胎儿不能存活，要想存活就必须在胚胎早期丢失条染色体，这过程称为三染色体自救。
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详细解释
例具有
种先天性异常的三
色体22症的活产女婴。
传 
示21三体的若干征象：包括鼻骨发育不全、牙发育不全、小颌和尿道下
。
传
，
常作为产前基因检测的
