Assertion: arginine's effect | /r/CapableOf | indicate dcongo red staining vials
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Source sentences:
text: Biofilm assay results: (a) Effect of peptides on biofilm formation after 18 h using a crystal violet assay, (b) images of vials showing crystal violet stain left by biofilms at the air–water interface, after removal of the aqueous phase, (c) Congo red assay, measuring amount of polysaccharide produced by bacteria, at the peptide concentrations indicated, and (d) Congo red staining vials, showing flocculation of the bacteria at the bottom of the tube as opposed to the sides where there is growth.