human
What are the three types of cells that make up the human body?
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The three main types of cells in the human body are epithelial cells, muscle cells and connective tissue cells. Epithelial cells are found on the surface of all organs and tissues, including skin, hair, and nails. Muscle cells are responsible for movement and include skeletal, cardiac, smooth, and vascular muscles. Connective tissue cells form the framework of our bodies and provide support and structure.