Early Epiblast Cells (Epb)

The early epiblast cells are part of the early blastocyst and are present at day 5 of human embryonic development. These cells are considered to be ground state omnipotent stem cells, with high clonogenicity, capability of forming chimeras and teratomas (in ex-vivo experimental conditions) . These cells would typically have two activated X chromosomes in female embryos. The cells will eventually develop into the whole embryo and some extraembryonic structures.