منابع مشابه
Comparison of noninvasive prenatal testing of cell‐free DNA in maternal blood and amniocentesis for evaluation of aneuploidy
Background: The aim of this study was to compare noninvasive prenatal testing (NIPT) of cell‐free DNA in maternal blood and amniocentesis in the diagnosis of aneuploidy. This study was designed to evaluate sensitivity, specificity, accuracy, positive predictive value and negative predictive value of NIPT for detection of aneuploidies compared gold standard test of amniocentesis. Materials and m...
متن کاملIntracellular free calcium oscillates during cell division of Xenopus embryos
In Xenopus embryos, previous results failed to detect changes in the activity of free calcium ions (Ca2+i) during cell division using Ca2(+)-selective microelectrodes, while experiments with aequorin yielded uncertain results complicated by the variation during cell division of the aequorin concentration to cell volume ratio. We now report, using Ca2(+)-selective microelectrodes, that cell divi...
متن کاملPrinciples of cell-free genetic circuit assembly.
Cell-free genetic circuit elements were constructed in a transcription-translation extract. We engineered transcriptional activation and repression cascades, in which the protein product of each stage is the input required to drive or block the following stage. Although we can find regions of linear response for single stages, cascading to subsequent stages requires working in nonlinear regimes...
متن کاملcell free fetal dna testing in maternal blood of romanian pregnant women
background: the discovery of circulating fetal dna in maternal blood led to the discovery of new strategies to perform noninvasive testing for prenatal diagnosis. objective: the purpose of the study was to detect fetal aneuploidy at chromosomes 13, 18, 21, x, and y by analysis of fetal cell-free dna from maternal blood, without endangering pregnancy. materials and methods: this retrospective st...
متن کاملO-45: Quantification of Cell-Free-Fetal-DNAfrom Maternal Plasma for the First Time in Pakistan:Diagnosis of Genetic Disorders
Background: Current prenatal diagnosis requires invasive testing which carries a 1-4% procedure-related-risk of miscarriage; hence, non-invasive techniques are desired. The recent demonstration of cell-free-fetal-DNA enriched from maternal plasma has opened new possibilities for non-invasive-prenatal-diagnosis of not only genetic-disorders such as β-thalassaemia and haemophilia but also chromos...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Fertility and Sterility
سال: 2020
ISSN: 0015-0282
DOI: 10.1016/j.fertnstert.2019.12.027