Vertebrate embryos transition rapidly from a single cell into a well-defined body plan complete with functional tissues and organ rudiments. This generation of embryonic form, known as morphogenesis, ...

In one small step for humankind, scientists have seen a fertilized mouse egg develop naturally and normally into early embryonic form. While a long way to go, it’s a positive sign that mammalian ...

After a sperm fertilizes an egg, the totipotent cell divides into a zygote. As division continues, some cells divide into the growing mass, distinguishing cells that form the embryo (epiblast) from ...

Embryo development starts when a single egg cell ... Eventually, the bulk of cells form into a very organized structure called the blastocyst, from which all future organs and tissues develop.

“The thing that just wows me about this is that blood stem cells, when they form in the embryo, form in the wall of the main vessel called the aorta. And they basically pop out of this aorta and ...

“The thing that just wows me about this is that blood stem cells, when they form in the embryo, form in the wall of the main vessel called the aorta. And they basically pop out of this aorta and go ...