Herein researchers established a prospective cohort study to assess the impact of COVID-19 on oocyte quality and embryo development. Valid data from a total of 906 couples were obtained from three ...

“They provide virtually all of the cytoplasm and organelles to the new embryo, as well as the maternal genome.” Oocytes manage to avoid some of the processes that cause DNA damage more than ...

embryo-forming eggs from denuded oocytes taken from "preantral" follicles in mice. Preantral follicles represent an earlier developmental stage, unlike the more mature antral follicles typically ...

and then transferring that embryo to a uterus, has become widely accepted. Freezing those eggs—or embryos—beforehand is now commonplace, too. But freezing unfertilized human eggs (or oocytes ...

Certain naturally fluorescent compounds in the embryo's metabolism are also key ... To do this, they compared oocytes from young and older females, as age is known to be crucial for oocyte viability.

"Reactive oxidative stress affects multiple aspects of reproductive physiologic processes, including oocyte maturation, fertilization, and embryo development ... [A] large amount of ...

Oocyte maturation, fertilization, and early embryo development before zygotic activation is characterized by the absence of new transcription from the genome. Thus, the process of oocyte-to-embryo ...

Exclusion criteria included age older than 42, cryopreserved oocyte thaw cycles, and oocyte and embryo banking cycles. Baseline characteristics were similar before and after the guidelines.