What Is Stemcell?

  • Unspecialized cells
  • Proliferation and slef-renewal
  • Differentiation into a various cell

Types of stem cells

  • Hematopoietic stem cells(HSC)
  • Neuronal stem cells (NSC)
  • Fertilized eggs
  • Mesenchymal stem cells(MSC)

Stem cells come from

Some examples

Technical problems & safety issues

1. Embryonic stem (ES) cells

» Fertilized eggs, duplication of somatic cells

» Stem cells (inner cell mass)

2. Induced pluripotent stem (iPS) cells

» It is derived from a somatic cell by inducing specific genes, and become like an embryonic stem cell.

3. Adult (somatic) stem cells

Fetal stem cells

» Umbilical Cord blood, Placenta etc.

Adult stem cells

» Maintain and repair the tissue in which they are found.

» Bone marrow, adipose tissue, skin, nerve tissue, muscle