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Scientists have found preserved proteins in 3.8-million-year-old ostrich eggshells from Africa. The researchers say these biological building blocks - bound into the eggshell - could provide genetic information up to 50 times older than any DNA.
 dinosaur ostrich egg cloning genetics protein
There are still stretches missing, but the researchers estimate that the genome is roughly 80% complete. The work could provide insights into the extinction of the mammoth and also resurrects questions about the viability of cloning long-dead species. ... But most scientists are doubtful this could ever be achieved. The changes that occur to an animal's genetic sequence after its death poses one of the principal hurdles. "It...


 mammoth cloning
A cloned human embryo has been produced for the first time from a skin cell, raising the prospect that such embryos could be made to provide stem cells tailored to any patient.


 cloning stem cell human skin
Fossil hunters have uncovered the remains of a dinosaur that has much of its soft tissue still intact.


 genetics dinosaur mummy fossil genome reconstruction cloning
Some scientists hold out hope that well preserved sperm or other cells containing viable DNA could be used to resurrect the mammoth. ... One population of mammoths lived on in isolation on Russia's remote Wrangel Island until about 5,000 years ago.


 mammoth genetics genome reconstruction cloning
US researchers have found a way to dramatically increase the harvest of stem cells from adult tissue. It is a practical step forward in techniques to produce large numbers of stem cells without using embryos. Using three drug-like chemicals, the team made the procedure 200 times more efficient and twice as fast, the Nature Methods journal reported.
 2009118 stem cell cloning
New hips, knees and heart valves are the starting points, but eventually they envisage most of the body parts that flounder with age could be upgraded.


 aging longevity transplant medicine cloning
The same approach could ultimately allow us to control the development of liver cells, heart cells or brain cells... and make treatments for virtually any tissue that is damaged or diseased.


 cloning genetics medicine
... this muscle layer was not sliced from an intact heart, nor even grown laboriously in the lab. Instead, it was printed, using a technology that could be the future of tissue engineering.


 genetics medicine cloning
Inevitably, people will wonder whether the creature's DNA might also be found. But the life molecule degrades rapidly over thousand-year timescales, and the chances of a sample surviving from the Cretaceous are not considered seriously.


 dinosaur cloning DNA