A Stem Cell Is Like The Stem Of A Tree,

a: A stem cell ~
b: the stem of a tree

What: "A stem cell is like the stem of a tree, it can branch out, becoming different types of cells such as skin, nerve, fat or muscle. It is the ancestor of the specialized cells in our bodies"

Writer: Dr. Loomis
Date: Feb 4 2012 3:50 PM

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