Bryozoan Anatomy - Fixation of Whole Specimens Bry. wall cells have a lot of water &.: through fixation & embedding there is distortion of the cells - & 2 layers of cells may be smeared to 1 layer. cell cell Fixation -> cell cell If sectioned it appears as one cell. Bry walls may have several layers of cuticle - polylayer. cuticle calcification cuticle Polylayering will be diff. for each species.: I know your partle. ap cuticle & calcified material is commonly intermixed. Need thin section of bry. examined under light microscope to det. orientation of cells & parts of bry -