[HN Gopher] Scientists program stem cells to mimic first days of...
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Scientists program stem cells to mimic first days of embryonic
development
Author : StemCells
Score : 35 points
Date : 2025-03-21 01:45 UTC (2 days ago)
(HTM) web link (news.ucsc.edu)
(TXT) w3m dump (news.ucsc.edu)
| gnabgib wrote:
| Why the title edit? (Should be: _Scientists program stem cells to
| mimic first days of embryonic development_ )
| StemCells wrote:
| fixed it
| StemCells wrote:
| Here is the source paper, pretty cool: https://www.cell.com/cell-
| stem-cell/fulltext/S1934-5909(25)0...
| 47282847 wrote:
| If you find yourself drawn to embryonic development, a great
| resource is https://www.embryo.nl/
| amelius wrote:
| > Were you also brought up with the myth of that one super
| sperm that 'fertilizes' an egg?
|
| > Then I have 'bad news'. The story is completely outdated. A
| few dozen, sometimes hundreds of sperm cells enter into a
| biological conversation with an egg. It is about exchanging
| with each other, in order to eventually merge. Penetration is
| not the word for what is happening here. Call it a cellular
| mating dance.
|
| This is clearly nonsense as IVF works fine.
| SapporoChris wrote:
| Poor argument I think. INV involves tens of thousand of
| sperm. However, I'm saying I agree with the grandparent.
|
| https://en.wikipedia.org/wiki/In_vitro_fertilisation#Co-
| incu... The sperm and the egg are incubated together at a
| ratio of about 75,000:1 in a culture media in order for the
| actual fertilization to take place.
| amelius wrote:
| > In certain situations, such as low sperm count or
| motility, a single sperm may be injected directly into the
| egg using intracytoplasmic sperm injection (ICSI).
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