试管婴儿第三代检查的是胚胎的基因，这一技术被称为PGT-A（Preimplantation Genetic Testing for Aneuploidy），它能够筛查胚胎中的染色体异常，以确保植入母体的胚胎是健康的。三代试管婴儿技术可以筛查包括染色体异常在内的多种基因缺陷，从而提高成功妊娠率，减少胚胎植入失败的风险。
The third-generation test tube baby checks the genes of the embryos, a technique known as PGT-A (Preimplantation Genetic Testing for Aneuploidy), which can screen for chromosomal abnormalities in embryos to ensure that the embryos implanted in the mother are healthy. Third-generation test-tube baby technology can screen for a variety of genetic defects, including chromosomal abnormalities, to improve the success rate of pregnancy and reduce the risk of embryo implantation failure.
试管婴儿第三代检查的基因包括染色体异常、单基因遗传病等，这些都是导致胚胎发育异常的重要因素。通过筛查这些基因，医生可以选择健康的胚胎进行植入，从而提高妊娠成功率，减少流产和其他并发症的风险。
The genes checked in the third-generation test tube baby include chromosomal abnormalities, monogenic genetic diseases, and so on, all of which are important factors leading to abnormal embryo development. By screening these genes, doctors can select healthy embryos for implantation, thereby increasing the success rate of pregnancy and reducing the risk of miscarriage and other complications.
三代试管婴儿技术的出现，为许多不孕不育夫妇带来了希望。通过筛查胚胎的基因，可以选择健康的胚胎进行植入，从而提高妊娠成功率，减少流产和其他并发症的风险，为不孕不育夫妇实现生育梦想提供了新的选择。
The emergence of third-generation test-tube baby technology has brought hope to many infertile couples. By screening the genes of embryos, healthy embryos can be selected for implantation, thereby increasing the success rate of pregnancy and reducing the risk of miscarriage and other complications, providing a new option for infertile couples to realize their dreams of having children.
三代试管婴儿技术的出现，为许多不孕不育夫妇带来了希望。通过筛查胚胎的基因，可以选择健康的胚胎进行植入，从而提高妊娠成功率，减少流产和其他并发症的风险，为不孕不育夫妇实现生育梦想提供了新的选择。
The emergence of third-generation test-tube baby technology has brought hope to many infertile couples. By screening the genes of embryos, healthy embryos can be selected for implantation, thereby increasing the success rate of pregnancy and reducing the risk of miscarriage and other complications, providing a new option for infertile couples to realize their dreams of having children.
三代试管婴儿技术的出现为许多不孕不育夫妇带来了新的希望。通过筛查胚胎的基因，可以选择健康的胚胎进行植入，从而提高妊娠成功率，减少流产和其他并发症的风险，为不孕不育夫妇实现生育梦想提供了新的选择。
In conclusion, the emergence of third-generation test-tube baby technology has brought new hope to many infertile couples. By screening the genes of embryos, healthy embryos can be selected for implantation, thereby increasing the success rate of pregnancy and reducing the risk of miscarriage and other complications, providing a new option for infertile couples to realize their dreams of having children.