Category Archives: Biologi

Mouse cloned from drop of blood

The team, led by Atsuo Ogura, of Riken BioResource Center in Tsukuba, took blood from the tail of a donor mouse, isolated the white blood cells, and used the nuclei for cloning experiments, using the same technique that produced Dolly the sheep in Edinburgh.

The process, known as somatic cell nuclear transfer, involves transferring the nucleus from an adult body cell – such as a blood or skin cell – into an unfertilised egg that has had its nucleus removed.

Via BBC News – Mouse cloned from drop of blood.

Bioengineers Build Open Source Language for Programming Cells | Wired.com

Genes contain information that defines the way our cells function, and some parts of the genome express themselves in much the same way across different types of cells and organisms. This would allow Endy and his team to build a language scientists could use to carefully engineer gene expression – what they call “the layer between the genome and all the dynamic processes of life.”

Via Bioengineers Build Open Source Language for Programming Cells | Wired Enterprise | Wired.com.

Sam Parnia – the man who could bring you back from the dead | The Observer

Using a technique called an ECMO, the blood of the deceased is siphoned out of the body, put through a membrane oxygenator and pumped round again. This buys the time needed to fix the underlying problem that caused the person to die in the first place. If the level of oxygen to the brain falls below 45% of normal the heart will not restart, Parnia’s research shows. Anything above that and there is a good chance.

Potentially, by this means, dead time can be extended to hours and there are still positive outcomes. “The longest I know of is a Japanese girl I mention in the book,” Parnia says. “She had been dead for more than three hours. And she was resuscitated for six hours. Afterwards, she returned to life perfectly fine and has, I have been told, recently had a baby.”

Via Sam Parnia – the man who could bring you back from the dead | Society | The Observer.