干细胞是非特化细胞，有潜力发育成体内任何类型的细胞. They are essential for growth, 发展, and repair. Stem cells can be found in many different parts of the body, 包括骨髓, 脐带, 和脂肪组织.
The Origin of Stem Cells
Stem cells are derived from the inner cell mass of a blastocyst, which is a hollow ball of cells that forms during the early stages of embryonic development. The inner cell mass gives rise to all of the tissues and organs of the body.
干细胞的来源
干细胞主要有两种类型: 胚胎干细胞和成体干细胞.
- 胚胎干细胞 are derived from the inner cell mass of a blastocyst. They are pluripotent, which means that they have the potential to develop into any type of cell in the body.
- 成体干细胞 are found in many different tissues and organs of the body. 他们是多能的, which means that they have the potential to develop into a limited number of cell types.
Stem cells are a valuable source of new cells for transplantation and regenerative medicine. They have the potential to be used to treat a wide range of diseases and conditions, 包括癌症, heart disease, 和脊髓损伤.
