Embryonic stem cells
(ESC) have the ability to self-renew and, being pluripotent, have the potential to create almost any cell type in the body.
Grinnemo et al., "Mechanical isolation of the inner cell mass is effective in derivation of new human embryonic stem cell
lines," Human Reproduction, vol.
Until now, the only way to get embryonic stem cells
was from leftover embryos made through in vitro fertilization.
The suspension of all grants, contracts and applications that involve the use of human embryonic stem cells
has been temporarily lifted.
Some researchers studying human embryonic stem cells
are surprised, disappointed, and even angry over the legal back-and-forth over the federal government policy on funding research using the cells.
No treatments based on embryonic stem cells
or iPS cells are approved yet in the United States.
Before the March executive order, federal funds could be used for research only on human embryonic stem cells
that were derived before 9 p.m.
Ten years of extensive research with embryonic stem cells
in America and around the world has produced not one human cure, but instead only failure after failure.
Human embryonic stem cell
research has been legal in Australia since 2002.
Very often embryonic stem cells
develop into different cells to those required.
Hamilton, ON -- A debate over the ethics of embryonic stem cell
research erupted after a Hamilton businessman made a $15 million donation to Canada's first human embryonic stem cell
library at McMaster University (McMaster Daily News, June 27, 2007).
To study spontaneous differentiation 4-day-old embryoid bodies were plated in tissue culture dishes in standard embryonic stem cell
media without LIF while for the neuronal differentiation study embryonic stem cells
were subjected to an 8-day induction procedure that consisted of 4 days of culture as aggregates without RA followed by 4 days of culture in the presence of 1 [micro]M RA ('4-/4+').