Introduction to cells
In order to fully explore stem cells, it is first necessary to have a basic understanding of typical cells. This way, it is simpler to compare them to stem cells, and the uniqueness of stem cells becomes more apparent.
So, what are cells?
Cells are the smallest unit of self-sustaining life. They make up all living organisms and tissues of the body. There are three main parts of a cell: the plasma membrane (also known as the cell membrane), the nucleus, and the cytoplasm. The plasma membrane is the semipermeable barrier that separates the interior of the cell from the exterior environment. It controls the transport of materials into and out of the cell and therefore protects the cell from harm. The nucleus is at the center of the cell. It stores all of the DNA which encodes the genetic material. Finally, the cytoplasm is a gel-like substance that fills the region of the cell inside the plasma membrane. It contains other cell parts that are responsible for specific functions, such as the Golgi complex and mitochondria.
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