Rat Embryos

The human Y chromosome, crucial for male development in the embryo, has been steadily losing its genes over millions of years. Currently, the chromosome is down to just 45 genes from an original count of 1438, with scientists estimating that it could disappear entirely within 11 million years. This genetic deterioration has raised concerns about th...

Scientists said Wednesday they have successfully used mice stem cells to grow kidneys in rat embryos, using a technique that could one day help grow human kidneys for transplant.

The human Y chromosome, crucial for male development in the embryo, has been steadily losing its genes over millions of years. Currently, the chromosome is down to just 45 genes from an original count of 1438, with scientists estimating that it could disappear entirely within 11 million years. This genetic deterioration has raised concerns about th...

Scientists said Wednesday they have successfully used mice stem cells to grow kidneys in rat embryos, using a technique that could one day help grow human kidneys for transplant.