Cytolysis
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Cytolysis, or osmotic lysis, occurs when the liquid outside a cell enters the cell causing it to burst. Water can enter the cell by diffusion through the cell membrane or through selective membrane channels called aquaporins, which greatly facilitate the flow of water.[1] It occurs in a hypotonic environment, where water moves into the cell by osmosis and causes its volume to increase to the point where the volume exceeds the membrane's capacity and the cell bursts. The presence of a cell wall prevents the membrane from bursting, so cytolysis only occurs in animal and protozoa cells which do not have cell walls. The reverse process is plasmolysis.
Quick Facts Specialty, Causes ...
Cytolysis | |
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A red blood cell in a hypotonic solution, causing water to move into the cell. | |
Specialty | Cell biology |
Causes | Osmosis |
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This article relies largely or entirely on a single source. (June 2008) |