REHOVOT, Israel (Reuters) - Scientists in Israel have created a model of a human embryo from stem cells in the laboratory, without using sperm, eggs or a womb, offering a unique glimpse into the early stages of embryonic development.
"The question is, when does an embryo model become considered an embryo?
At the moment we are really, really far off from that point," said team leader Jacob Hanna.
"None of these models fully recapitulate natural human development but each adds to ways in which many aspects of human development can now be studied experimentally," she said.
The study raises some ethical questions over the possibility of potential future manipulation in human embryo development, Hanna and others noted.
Persons:
Jacob Hanna, Hanna, Magdalena Żernicka, Goetz, Rami Amichay, Ari Rabinovitch, Mark Heinrich
Organizations:
Israel's Weizmann Institute of Science, International Society for Stem Cell Research, University of Cambridge
Locations:
REHOVOT, Israel, Boston