Motherhood is entirely possible at the age 74—for some birds at least. A Laysan albatross (Phoebastria immutabilis) named ...

The development of body plans in all animals is controlled by a remarkably ... other genes that affect the positioning of cells in the embryo. While this sounds complicated, it is a far more ...

They have successfully grown human stem cells in a pig embryo. Why would anyone do this? Turns out, many scientists have been working on growing the organs of one animal inside of a different type ...

While the potential de-extinction of animals like the woolly mammoth or ... The reprogrammed cells were injected into a mouse embryo, resulting in a chimeric mouse with physical traits derived ...

Scientists have officially grown a notochord—the tissues that act as the “GPS for the developing embryo” by guiding the ...

or embryo, generates the cells, tissues, and organs of a new individual and assembles them into their proper form. Evolution produces the body shapes of the animal kingdom; development produces ...

It is a defining feature of all animals with backbones and plays a critical role in organising the tissue in the developing embryo. Despite its importance, the complexity of the structure has ...

The PHS Policy covers all live vertebrate animals. If an embryo hasn't hatched yet, or an early-larval-stage fish hasn't used up its yolk sac yet, is it not still a vertebrate animal? My facility ...

It is a defining feature of all animals with backbones and plays a critical role in organising the tissue in the developing embryo. Despite its importance, the complexity of the structure has ...