1.
New theory addresses frozen Earth paradox
ALAMEDA, Calif., Aug. 23 (UPI) -- U.S. scientists say they have developed a technique to generate new lines of cultured human embryonic stem cells, leaving the embryo intact.
Robert Lanza and colleagues at Advanced Cell Technology Inc., of Alameda, Calif., said the technique -- involving taking single cells from human embryos -- could allow scientists to pursue human embryonic stem cell studies but avoid the controversial destruction of human embryos.
Embryonic stem cells are typically grown by extracting a mass of cells from an embryo after it forms a hollow blastocyst, destroying the embryo in the process. But Lanza's team showed they could instead remove a single cell from an earlier stage mouse embryo and amplify it into a colony of embryonic stem cells in culture.
The procedure is similar to that used during in vitro fertilization to remove a single cell for pre-implantation genetic diagnosis.
The research is to be published online this week by the journal Nature.
|
|
|
|
|
|
| Additional Science News Stories | |
WASHINGTON, May 31 (UPI) --
The U.S. House Thursday rejected a bill that would outlaw abortions based on gender, with abortion opponents promising to make the vote an election issue.
|
NEW YORK, May 31 (UPI) --
Actor Michael McKean, who was hit by a car last week while walking in New York, says he has been discharged from St. Luke's Hospital.
|
BALTIMORE, May 31 (UPI) --
U.S. astronomers are forecasting the Milky Way will have a violent collision with the neighboring Andromeda galaxy in about 4 billion years.
|
CLEVELAND, May 31 (UPI) --
Cleveland prosecutors have dropped their case against a man who was ticketed for littering when he dropped a dollar he was attempting to give a disabled person.
|
| Stories | Photos | People | Comments |
View Caption
