Embryonic stem cells

Embryonic stem cells (ES cells) are stem cells derived from the inner cell mass of an early stage embryo known as a blastocyst.The embryos from which human embryonic stem cells are derived are typically four or five days old and are a hollow microscopic ball of cells called the blastocyst. The blastocyst includes three structures: the trophoblast, which is the layer of cells that surrounds the blastocoel, a hollow cavity inside the blastocyst; and the inner cell mass, which is a group of cells at one end of the blastocoel that develop into the embryo proper.in order to determine the presence of transcription factors that are typically produced by undifferentiated cells different techniqiues were used. Two of the most important transcription factors are Nanog and Oct4.Human Embryonic stem cells can differentiated into cardiomyocytes.