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    Protocols in Current Issue
    Evaluation of Genotoxicity by Micronucleus Assay in vitro and by Allium cepa Test in vivo
    Authors:  Christina N. Banti and Sotiris K. Hadjikakou, date: 07/20/2019, view: 6370, Q&A: 0
    [Abstract] The in vitro and in vivo genotoxicity of new metallodrugs either as Small Bioactive Molecules (SBAMs) or Conjugates of Metals with Drugs (CoMeDs) is evaluated by the micronucleus test and the Allium cepa assay, respectively. Fetal lung fibroblast cells (MRC-5), normal human corneal epithelial cells (HCEC) and ...
    Biomechanical Characterization of Onion Epidermal Cell Walls
    Authors:  Daniel M. Durachko, Yong Bum Park, Tian Zhang and Daniel J. Cosgrove, date: 12/20/2017, view: 10435, Q&A: 1
    [Abstract] Here we describe two experimental protocols to measure the biomechanical properties of primary (growing) plant cell walls, with a focus on analyzing cell wall epidermal strips of onion scales. The first protocol measures cell wall creep (time-dependent irreversible extension) under constant force. Such creep is often mediated by the wall-loosening ...
    Preparation of Onion Epidermal Cell Walls for Imaging by Atomic Force Microscopy (AFM)
    Authors:  Tian Zhang and Daniel J. Cosgrove, date: 12/20/2017, view: 12278, Q&A: 0
    [Abstract] The growing plant cell wall is comprised of long, thin cellulose microfibrils embedded in a hydrated matrix of polysaccharides and glycoproteins. These components are typically constructed in layers (lamellae) on the inner surface of the cell wall, i.e., between the existing wall and the plasma membrane. The organization of these ...



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