Differentiated cells are important for various body functions because they are capable of performing specialized functions.
Cell specialization is the process during development by which different cell types are developed to perform specific functions.
Multicellular organisms usually have differentiated cells to carry out specific functions.
The process of cell specialization occurs as a response to the activation and expression of differential genes in different tissues/cell types.
For example, differential gene expression can lead to the differential expression of an integral transmembrane protein in the cell membranes of a given cell type, thereby this cell type is able to transport certain substances and/or ions inside and outside the cell.
In the human body, a well-known example of cell differentiation is the red blood cells, which are specialized cells capable of transporting nutrients and oxygen around the body.
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