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WHAT IS SELS |
| SELS is a selenoprotein, which contains a selenocysteine (Sec) residue at its active site. Cells are the structural and functional units of all living organisms. Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, or have many cells—an estimated 100,000,000,000,000 cells. |
