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: The '''cell wall''' can protect the [[Cell (Biology)|cell]] from some [[toxic]] [[chemical]]s and some [[virus]]es.
: The '''cell wall''' keeps the [[Cell (Biology)|cell]] in the same shape.
===About Cell Walls===
: The '''cell walls''' of [[Plant Cell|plant cells]] are made of [[cellulose]].
: The '''cell walls''' of [[Fungal Cell|fungal cells]] are made of [[chitin]].
: The '''cell walls''' of [[bacteria]] are made of [[murein]].