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The cells of eukaryotes (left) and prokaryotes (right)
Endothelial cell: nuclei stained blue, mitochondria stained red, and F-actin, a component of microfilaments, stained green. Cell imaged on a fluorescent microscope.

In biology, the cell is the basic structure of organisms. All cells are made by the division of other cells.

The environment outside the cell is separated from the cytoplasm inside the cell by the cell membrane. Inside some cells, parts of the cell stay separate from other parts. These separate parts are called organelles (like small organs). They each do different things in the cell. Examples are the nucleus (where DNA is), and mitochondria (where chemical energy is converted). view more...

Cell Vs. Virus: A Battle For Health - Shannon Stiles

Cell Vs. Virus: A Battle For Health - Shannon Stiles
Cell Meiosis:  Crash Course Biology #13

Cell Meiosis: Crash Course Biology #13
White Blood Cell Chases Bacteria

White Blood Cell Chases Bacteria
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Color Cell
Color Cell
Cell War
Cell War
Animal Cells
Animal Cells
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