نتایج جستجو برای: 21 trisomy
تعداد نتایج: 251021 فیلتر نتایج به سال:
Our objective was to determine if whole genome amplification (WGA) provides suitable DNA for qPCR-based genotyping for human embryos. Single blastomeres (Day 3) or trophoblastic cells (Day 5) were isolated from 342 embryos for WGA. Comparative Genomic Hybridization determined embryo sex as well as Trisomy 18 or Trisomy 21. To determine the embryo's sex, qPCR melting curve analysis for SRY and D...
A chromosomal disorder caused by the presence of all or part of an extra 21st chromosome is known as the Down syndrome, or trisomy 21, or trisomy G. In the last fifteen years it has become possible to observe these features by ultrasound examination in the third month of intrauterine life. About 75% of trisomy 21 fetuses have absent nasal bone. In the present work, neural network schemes that h...
Reports documented a higher frequency of apolipoprotein E (apoE) allele epsilon 4 among mothers of children diagnosed with Down syndrome. We studied the prevalence of apoE alleles among 56 conceptuses with trisomy 13, trisomy 18, or trisomy 21. The presence of the 3 most common apoE alleles (epsilon 2, epsilon 3, epsilon 4) was determined by polymerase chain reaction-restriction fragment length...
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