cellular differentiation is the process by which a less specialized cell becomes a more specialized cell type. Different tissues have different kinds of cells.
Differentiation occurs many times during the development of a multi-cellular organism as the organism changes from a single zygote to a complex system of tissues and cell types. Differentiation is a common process in adults as well: adult stem cells divide and create fully-differentiated daughter cells during tissue repair and during normal cell turnover.
![File:Stemcelldifferentiaion.jpg](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_suYXEIf9_k6ScMGw4yBOAMM4lIS5icvUV-EQxnOmYfyLi5lUUvPmW1XHaSvYLO71hqmos65SPpZMdlQqRm3w_U_aKipUO6t2eQf2srHjbeCh1bQiSGn6tBvG56_rnKqsxkxkgemk_NuEz2zlkmzz1KAB2_Vdcv6LoIc_IE98F0T8b5hP6anO3MBzFXQ2SXmhl-PFwic0SR=s0-d)
Differentiation occurs many times during the development of a multi-cellular organism as the organism changes from a single zygote to a complex system of tissues and cell types. Differentiation is a common process in adults as well: adult stem cells divide and create fully-differentiated daughter cells during tissue repair and during normal cell turnover.
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