その理由は次のとおりです。
* トチポーテント幹細胞 are the most versatile type of stem cell. They are found in the very early stages of embryonic development (the first few cell divisions after fertilization). These cells can differentiate into all cell types, including the placenta and other extraembryonic tissues.
* Pluripotent stem cells are found in the inner cell mass of the blastocyst (a later stage of embryonic development). These cells can differentiate into all cell types of the body, but not the placenta.
* 多能性幹細胞 are found in adult tissues and can differentiate into a limited number of cell types within that tissue. For example, blood stem cells can differentiate into red blood cells, white blood cells, and platelets.
* Unipotent stem cells are the most specialized and can only differentiate into one cell type. For example, muscle stem cells can only differentiate into muscle cells.
したがって、胎盤に必要な幹細胞は、胎盤に必要なものを含め、体内の細胞タイプになる可能性があるため、分化の最大の可能性があります。
