human
What are the three types of cells that make up the human body?
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The three types of cells that make up the human body are: epithelial cells, muscle cells, and connective tissue cells. Epithelial cells line the surfaces of our bodies, such as the skin, digestive tract, lungs, and urinary system. Muscle cells contract to move our bodies and produce energy. Connective tissue cells provide structure and support for the body's organs, muscles, and bones.