trisomy 21

1. Study of Ag-stained NORS in Trisomy 21 Families
   21三体征家庭的银染核仁形成区的研究
2. Meta-analysis of prenatal screening for trisomy 21 using nuchal translucency measurement with serum markers
   血清学指标结合颈部透明膜产前筛查21-三体综合征的Meta分析
3. Ultrasound screening for trisomy 21 syndrome at 11-13~ (+ 6) gestational weeks
   超声在孕11-13~（+6）周筛查21-三体综合征中的作用
4. [ Conclusion] Trisomy, especially trisomy 21 is the most frequent abnormal chromosomal karyotype in fetuses.
   常见染色体异常；B染色体【结论】染色体三体，特别是21三体是最主要的胎儿异常核型。
5. 21 Trisomy: Observation on Extra 21 Chromosome Origin
   21三体：额外21号染色体来源观察
6. Isolate trisomy 8 ( 21 cases) was the most common numerical abnormality.
   单纯+8（21例）为常见的数目异常。
7. Conclusion The genetic ultrasound can significantly improve the detection rate of fetuses with abnormalities in trisomy, especially in trisomy 21.
   结论遗传学超声检查可提高常见染色体三体胎儿的检出率，尤其对于21三体。
8. Application of inter fluorecence in situ hybridization of chromosome 13/ 21 α satellite probe in amniotic cells for prenatal diagnosis trisomy 21 syndrome
   染色体13/21α卫星探针用于产前诊断21三体综合征
9. A Method for Rapid and Early Diagnosis of Trisomy 21 Using Molecular Techniques
   DNA分析法快速诊断21三体综合征
10. [ Results] Eighteen cases with typical trisomies were detected by STR-PCR, among them, there were sixteen trisomy 21, one trisomy 18 and one trisomy 13 respectively, in which 4 were fetuses from prenatal diagnosis.
    【结果】检出18例完全型染色体三体综合征，包括21三体16例；18三体和13三体各1例，其中4例为产前诊断的胎儿。
11. Therefore, maternal deficiency of folic acid in pregnancy can finally cause development of fetal trisomy 21 syndrome by its effect on the methylation of DNA in oocyte during secondary meiotic division.
    故妊娠期母体叶酸缺乏可能通过影响DNA甲基化最终导致胎儿21-三体综合征的发生。
12. Nasal bone in first-trimester screening for trisomy 21
    妊娠早期鼻骨测量用于21-三体筛查
13. It turned out that 7 cases were found with trisomy 21.4 cases among the 9 916 negative-screening cases were born with trisomy 21, according to the analysis of the chromosome karyotypes in peripheral blood.
    在筛查阴性的9916例中，出生DS患儿4例，经外周血染色体核型分析证实为21三体。
14. Detection of Trisomy 17,18 and 21 in Acute Lymphoblastic Leukemia by Fluorescence In Situ Hybridization
    荧光原位杂交技术检测急性淋巴细胞白血病异常17、18、21染色体
15. Advances in study on relationship between maternal deficiency of folic acid and fetal trisomy 21 syndrome
    母体叶酸缺乏与胎儿21-三体综合征关系的研究
16. ONE CASE OF 'RING-TYPE' TRISOMY 21 SYNDROME: identified by high-resolution G-banding technique
    用高分辨G带技术鉴定一例环形21三体综合征
17. Objective To explore the diagnosis, prenatal diagnosis and early intervention of trisomy 21 syndrome ( Down syndrome, DS) at cellular, cell-molecular and molecular levels.
    目的在细胞、细胞分子和分子水平对21三体综合征（Downsyndrome，DS）进行诊断和干预。
18. Analysis of trisomy of chromosome 21 syndrome of 376 cases heredity consultants
    广东部分地区376例遗传咨询者染色体21-三体综合征分析
19. Detection of Trisomy 21 Fetuses by Mid-Trimester Ultrasound
    21-三体胎儿的孕中期超声检出
20. Objective: To improve the understanding and diagnostic ability of the brain changes in21 trisomy syndrome.
    目的：提高对小儿21三体综合征脑部CT表现的认识和诊断。
21. Observation on the Rate of Satellite Association in Young Couples with Trisomy 21 Offsprings
    21-三体患儿的年轻双亲染色体随体联合率的研究

noun

1. a congenital disorder caused by having an extra 21st chromosome

   Synonym:    mongolismmongolianismDown's syndromeDown syndrome