![Embryonic stem cells inforgraphic](http://static.sciencelearn.org.nz/images/images/000/002/440/full/embryonic_stem_cells_large20161123-3951-1f8ef07.jpg?1674168183)
Embryonic stem cells are pluripotent. An embryo begins as a single, fertilised egg that divides to form a blastocyst. The blastocyst is made up of embryonic stem cells, which can differentiate into all cells, such as brain, heart, liver and lung cells.