Year1
: r在
: r can identify the gender of the fetus. Now more and more people choose to smoke at more than 10 weeks of pregnancy. Blood for fetal gender identification (
: rblood), this test
: r The accuracy of the method is very high (up to .%), and it is simply done through a venous blood test
: r is safe and convenient, and has no impact on the fetus. You can know the test
: r results. This kind of test
: r method is
: r br/>
: r is commonly used by pregnant mothers and is very legal.
< : r: >: The principle of drawing blood for fetal gender identification:
< : r: >: After the blood samples of pregnant women are extracted, they are first processed by high-speed centrifugation twice, and the supernatant liquid is moved into a new sterile tube and frozen for later use. Then, reagents are used to dissolve the supernatant liquid into Extract it, dye it, and observe it under ultraviolet light. If you see the R band, it means it is a boy, and if there is no R band, it means it is a girl. Although how the free fetus enters the maternal blood is still a mystery, scientists have The fetus can truly be detected in the blood sample of pregnant women. And as the fetus continues to grow, the concentration will become higher and higher, reaching a peak in the weeks after conception. br>
< : r: >: These fragments and the fetus What is the connection between gender? It turns out that researchers found that a gene called R only exists on chromosomes. Once its presence is detected, it means that the fetus is male, so the fetus in the mother's blood was isolated See if you can find the R gene, and the gender question will naturally be solved. Unlike B-ultrasound, which has to wait until the fetus is large enough to observe gender characteristics, this inspection method can be performed in the weeks after conception, and its accuracy is higher than B-ultrasound, reaching. %
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