title: Migration of potassium out of electron-microscope specimens.
mesh_terms: D002463:Cell Membrane Permeability; D004577:Electron Probe Microanalysis; D008567:Membranes, Artificial; D008854:Microscopy, Electron; D011188:Potassium / Q000032:analysis*; D012964:Sodium / Q000032:analysis
chemical_list: D008567:Membranes, Artificial; D012964:Sodium; D011188:Potassium