Search results for "Cleavage-stage transfer"

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Changes in sex ratio from fertilization to birth in assisted-reproductive-treatment cycles

2014

Background: In Western gender-neutral countries, the sex ratio at birth is estimated to be approximately 1.06. This ratio is lower than the estimated sex ratio at fertilization which ranges from 1.07 to 1.70 depending on the figures of sex ratio at birth and differential embryo/fetal mortality rates taken into account to perform these estimations. Likewise, little is known about the sex ratio at implantation in natural and assisted-reproduction-treatment (ART) cycles. In this bioessay, we aim to estimate the sex ratio at fertilization and implantation using data from embryos generated by standard in-vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) in preimplantation gene…

InfertilityMaleReproductive Techniques Assistedmedicine.medical_treatmentCleavage Stage OvumEmbryonic DevelopmentFertilization in VitroReviewBiologyPreimplantation genetic diagnosisIntracytoplasmic sperm injectionPreimplantation embryo developmentAndrologyEmbryo Culture TechniquesHuman fertilizationEndocrinologyCleavage-stage transferReproduccióPregnancyX Chromosome InactivationmedicineAnimalsHumansEmbryo ImplantationSex RatioInfertility Malereproductive and urinary physiologyBlastocyst-stage transferFetusPregnancyurogenital systemX-chromosome inactivationObstetrics and Gynecologymedicine.diseaseEmbryo TransferBlastocystReproductive Medicineembryonic structuresEmbryo LossEctogenesisFemaleLive birthInfertility FemaleLive BirthSex ratioDevelopmental Biology
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