1
Two kinds of stem cells are used in the process
One embryonic stem cell and a small clump of trophoblast stem cells are mixed and placed in a gel culture
Trophoblast
stem cells
Embryonic
stem cell
2
As the cells multiply, an internal structure emerges
The trophoblasts, which will become the placenta, and the cells that will form the embryo clustering into two sections
Trophoblasts
Embryo
cells
3
The cells begin to specialise
A small patch of embryonic cells becomes the mesoderm, the cells that will go on to become heart, bone and muscle tissue
Mesoderm
Trophoblast
stem cells
Trophoblasts
Embryo
cells
Mesoderm
Embryonic
stem cell
1
Two kinds of stem cells are used in the process
One embryonic stem cell and a small clump of trophoblast stem cells are mixed and placed in a gel culture
2
As the cells multiply, an internal structure emerges
The trophoblasts, which will become the placenta, and the cells that will form the embryo clustering into two sections
3
The cells begin to specialise
A small patch of embryonic cells becomes the mesoderm, the cells that will go on to become heart, bone and muscle tissue