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Medical Term:

cell wall



  1. the outer layer or membrane of some animal and plant cells; in the latter, it is mainly cellulose.
  2. in bacteria, the rigid structure, usually containing a peptidoglycan layer, that provides osmotic protection and defines bacterial shape and staining properties.
© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.