What does CM stand for?

hESCs, for the purpose of the guidelines, are cells derived from the inner cell mass of blastocyst-stage human embryos, are capable of dividing without differentiation for a prolonged period in culture, and are known to develop into cells and tissues of the three primary germ layers.

Embryonic stem cells are derived from a group of cells called the inner cell mass in a very early stage embryo.

The method including the steps of (a) culturing a grape embryonic culture in a first liquid culture medium to grow a cellular suspension culture, the first liquid culture medium including a plant growth regulator and a filtrate from a plant pathogen culture; (b) recovering an embryogenic cell or embryogenic cell mass from the cellular suspension culture; and (c) culturing the embryogenic cell or embryogenic cell mass in a second liquid culture and in a third culture media to select a grape somatic embryo or a grape plant having resistance to a plant pathogen.

The new technique, which is based on Agrobacterium-mediated transformation, inserts GFP genes into the cell mass derived from immature seeds of Japanese cedar trees.

Representative slides demonstrated considerable integration of the Y chromosome throughout the inner cell mass and the trophectoderm (the tissue layer that forms the wall of the early embryo) of the 5-day-old recipient embryos and throughout the completely hatched 6-day-old recipient embryos.

Hwang's team made history when they removed the inner cell mass (cells that become the embryo) from the blastocyst and grew the cells in a nutrient-rich petri dish.

Okarma and Thomson provide an overview on what human embryonic stem cells are and their source B the inner cell mass of a 5-day old embryo, the blastocyst.

Stem cells are harvested from the inner cell mass of the blastocyst, but this always involves the destruction of the embryo.