Plant Cell Wall
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The cell wall is the tough, usually flexible but sometimes fairly rigid layer that surrounds some types of cell (biology)|cells. It is located outside the cell membrane and provides these cells with structural support and protection, in addition to acting as a filtering mechanism. A major function of the cell wall is to act as a pressure vessel, preventing Cytolysis|over-expansion when water enters the Cell (biology)|cell. Cell walls are found in plants, bacteria, fungus|fungi, algae, and some archaea. Animals and protozoa do not have cell walls. The material in the cell wall varies between species, and can also differ depending on cell type and developmental stage. In bacteria, peptidoglycan forms the cell wall. Archaean cell walls have various compositions, and may be formed of glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides. Fungi possess cell walls made of the glucosamine polymer chitin, and algae typically possess walls made of glycoproteins and polysaccharides....
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Plant Cell Wall文章数量变化趋势

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