Since human embryonic stem cells (hES cells) were discovered they have been studied intensively, revealing hES cells as a powerful research tool for understanding early embryonic development in humans.
Síðan stofnfrumur úr fósturvísum manna (hES frumur) voru uppgötvaðar hafa þær verið vinsælt rannsóknarefni og reynst vera ómetanlegar til skilnings á fyrstu stigum fósturþroska mannsins.