2.5. VLP Kinetic Stability Assay The chemical stability of the MVM VLPs under different pH and ionic strength con- ditions in different buffers (150 mM Tris-HCl, 650 mM NaCl at pH = 7.6 or 6.8, or PBS at pH = 6.2 or 5.5) was tested by the addition of a GdmHCl solution to a ...