Understanding Stem Cells part 4

Stem cell 5

 

What is a stem cell?

Ultimately, every cell in the human body can be traced back to a fertilized egg that came into existence from the union of egg and sperm. But the body is made up of over 200 different types of cells, not just one. All of these cell types come from a pool of stem cells in the early embryo. During early development, as well as later in life, various types of stem cells give rise to the specialized  or differentiated cells that carry out the specific functions of the body, such as skin, blood, muscle and nerve cells.

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