Renee Reijo Pera, a biologist at Stanford's Institute for Stem Cell Biology and Regenerative Medicine, points out that earlier attempts to create offspring with
sperm from embryonic stem cells resulted in short - lived mouse pups that were either giants or midgets.
Newcastle University and the NorthEast England Stem Cell Institute are aware that the research paper «Derivation of Human
Sperm from Embryonic Stem Cells» by a group led by Professor Karim Nayernia has been withdrawn from the academic journal Stem Cells and Development.
Not exact matches
In June Italian scientists announced the first human
embryonic stem cells derived
from parthenotes — embryo - like structures formed when an egg starts to divide on its own, with no
sperm involved.
Scientists have already reported progress in growing precursor
cells for eggs and
sperm from both iPS and
embryonic stem cell lines.
In 2009, Reijo Pera showed that it is possible to generate functional,
sperm - producing germ
cells from human
embryonic stem cells grown under certain conditions in the laboratory.
Last week British scientists announced that they had created
sperm cells from embryonic stem cells for the first time.