Estimation of second polar body
retention rate after conventional insemination and intracytoplasmic sperm injection: in vitro observations from more than 5000 human oocytes.
To explore the effect of EGCG on the nuclear maturation of bovine oocytes, the first polar body
of mature oocytes was observed.
echinata is among the faster developing Saccostrea species; for example, the timing of the release of the first polar body
is half that of S.
biopsy is the removal of one or both polar bodies, independently or simultaneously.
The first meiotic division that progresses through metaphase I is manifested by the formation of the first polar body
, with the oocytes being arrested again at metaphase II until fertilization .
Cytoskeletal events preceding polar body
formation in activated Spisula eggs.
One of these chromosomes-perhaps the maternal one--ends up in the cell that splits again to become the egg and polar body
. Because this chromosome had been duplicated at the outset, the egg and polar body
each end up with a copy of the maternal chromosome.
Another offers polar body
biopsies for cystic fibrosis.
Subsequently, COCs were completely denuded of cumulus cells by vortexing and first polar body
of oocytes was evaluated.
In most animals, the first polar body
is formed at the animal pole and subsequently, the second polar body
is formed at the vicinity of the first polar body
The egg took just 72 hours to develop to the point where it could be fertilised: at this point it had developed a "polar body
", a small structure only produced once an egg is mature.
However, as the 1st polar body
was released, a cap of nonpigmented cytoplasm appeared at the animal pole (Fig.