Please make it in-depth with grammar and punctuation, What is a Stem Cell.

Answer:
Stem cells are the body's raw materials — cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.
Examples: Embryonic stem cells, or amniotic fluid stem cells
Explanation:
I just gave you a definition with correct punctuation and two examples you could use:)