They are formed in a woman's body before birth and have to be on standby for decades to possibly be fertilized one day. But ...

The use of human oocytes to carry out similar procedures has already been licensed by the HFEA 5, but the shortage of donated human oocytes 6 has prompted the search for an alternative, hence the ...

Human oocytes have been matured and fertilized by spermatozoa in vitro. There may be certain clinical and scientific uses for human eggs fertilized by this procedure.

However, aside from their life-creating properties, oocytes are different from other cells due to their sheer size. While they vary immensely among species, the human egg cell is roughly 150 ...